muscle-growth Hot Tub Muscle Machine

[magicworker]

This is somewhat of a continuation of My Partner Moves On with different main characters. It might be helpful but shouldn't be necessary to read that story.

 

Part 1: Jeff and Jason

 

Jeff played on the college football team, but his parents, both professors, found sports enigmatic. They paid more attention to his genius little sister, and learned to trust that Jeff would find his own way, which gave him limited independence and made staying in the closet easy, while also hooking up and even dating occasionally. It still grated on him that he lived at home, even if he had his own mini apartment over the garage.

 

Jason's mother died in car accident when he was little and his dad recently passed away after a long battle with cancer. He stayed with family as he finished high school and spent a year at a community college, but yearned for a bigger city and transferred. With part of his inheritance, he bought a small house and yard on the outskirts of town for a new home. He planned to study nutrition and also found a part-time job at the health food store. It was at the store that he heard about a great deal on hot tubs and bought one to inject some fun and decadence in his solitary and otherwise boring retreat.

 

It was also at that store where he met Jeff who was looking for supplements that might be organic or whole-food enough for his parents to buy for him. He found Jason irresistably cute at first sight. Jason openly admired Jeff's muscles and they were both surprised that they ended up making out and 69-ing in the back store room. Jason was in good shape but Jeff motivated him to get bigger. Jeff was drawn to Jason's calm maturity, and was excited to hear about Jason's empty house with a hot tub.

 

There were a few other guys in town that Jeff had hooked up with, and they occasionally got invites to Jason's "pleasure palace," as their friend George called it, but everyone could tell that Jeff and Jason were a couple. After a year, Jason gave Jeff a key and they practically lived together, especially during the summer. As the fall came closer, Jeff planned to be busy with football and Jason was happy to focus on his studies. So, Jason was surprised that Jeff came over after his first practice, still partially in his uniform and looking desparate.

 

Jeff's sister Ally was ambivalent about the football team's first practice. She had planned to give each team member one bottle of what she labeled "Muscle Power". It was more diluted than the sample she and Patrick had tried that first workout when they got noticeably bigger and stronger within minutes of working out. Her business partner Ryan limited her supply and she had to make sure it would cover the many bottles over all the fall practices that she promised to the coach. So, she was unhappy when she saw that the coach had given two bottles to each player. The coach was elated with the energy and strength of the team and demanded more and more of them as practice wore on. Ally warned him that the "caffeine and adrenaline" of the supplement was too much at two bottles, and she noticed that many of the players had to adjust their dicks that were also responding to the formula. It looked like a couple players came out of a tackle with a dummy having orgasmed in their pants, but they seemed to ignore it. Her brother looked like he was holding it together. Her boyfriend Patrick was more experienced with the formula's effects and channeled his energy into lifting other players and squatting with them on his back or shoulders.

 

After practice, everyone was in a rush for some privacy, including Jeff who had to drive Ally home with the couple cases of bottles that she decided not to leave there for the coach to steal or analyze. Ally noticed Jeff squirming in his seat and sweating a bit and she wasn't sure whether to laugh or be concerned. Her concern grew when he didn't head to his room over the garage to release his boiling load, but took the car back out on the road. She remembered leaving an unlabeled bottle of Muscle Power near her seat and hoped that Jeff wasn't thirsty.

 

"I'm so horny, Jason. I need you," Jeff pleaded as he chugged the rest of a water bottle.

 

"Wow, okay," Jason replied, but he wasn't quite ready for the rough ride as Jeff quickly pounded a huge load into him. Minutes later, Jeff gave him a face fucking. Then, they more calmly jacked off together as Jason licked over Jeff's wet, sweaty muscular body that was pumped larger than either of them had ever seen it.

 

Jeff collapsed in relief as Jason continued licking his lover and he felt his own libido spike before he came again over the grinning Jeff.

 

"Wow, that was amazing." Jason wasn't sure which one of them said it or if they just both thought it, but it was true.

 

"Usually, you're exhausted after practice, but you look and feel really pumped," Jason noted.

 

"Yeah, and that was a tough one, lots of drills, especially with my jock and cup holding back my dick which was hard almost the whole time. Man, I'm starving now."

 

Jason was a good cook and even without advance notice, he whipped up a big tasty dinner for both of them. Jeff practically licked his plate clean before finally showering. They talked and cuddled for a bit, before Jeff headed home to get sleep and wash his uniform before tomorrow's practice.

 

That next day, Ally spread two bottles out for the entire team and only brought enough for one per player. The coach started unhappy, but cheered up a bit as the team still demonstrated some of the power of the previous day, just with less energy and aggression. After practice, they bragged about how much they ate the previous evening and how much stronger and bigger they already felt two days into the pre-season.

 

A couple players brought up that they were horny yesterday, too, but most of them didn't want to risk getting aroused again in the locker room and the topic faded quickly. Jeff thought briefly about Jason, but felt guilty about how rough he was. Also, Jason was a bit of a health nut and probably would disapprove of Jeff using this supplement that the team was taking, even if Ally had assured him it was safe.

 

Meanwhile, it was Jason's turn to have an awesome workout. He was stronger than ever and got a great pump. He had trouble keeping his dick soft, too. He was a bit surprised by how rough and demanding Jeff had been the previous day, but he felt like that was exactly what he wanted now. He called his friend George to wrestle around and jack off that night. George was more than happy to get held and pinned by Jason who was more aggresive than usual.

 

The next day of practice was all meetings, because usually the first couple days left the team too sore for much else. This year that seemed less a problem, but there was the usual paperwork and routines to go through. While not as good as his sister, Jeff was no academic slouch, so he coasted through. The most interesting thing was when Ally announced to the team that the supplement needed to be cycled, so some days it would hit and be like the first day, other days were more maintenance. Jeff could tell that Ally was lying at least a little about some part of that.

 

After a couple weeks, it didn't seem like she was lying. To the players' relief, it never hit quite so intensely as the first day, and they were given notice when the next day would be a high dose day. For those days, Jeff warned Jason that he was getting horny and they usually got a third to help satisfy his revved-up libido.

 

Jeff never tracked whom exactly he did what with, but Jason's more organized mind noticed. Jason would sometimes have another super-charged workout and his friends occasionally commented they had a similar experience. Jason wondered if Jeff's cum caused people to have a boost of energy and grow more muscular. This thought was quickly confirmed when he started insisting on taking Jeff's loads and each workout afterwards left Jason a bit bigger and stronger. He didn't share this realization with Jeff, who was getting bigger at an even faster rate.

[magicworker]

Part 2: The Seeds Are Planted

 

The team was riding high on a very impressive start to the season. They were stronger, faster, tougher and bigger than their team had been in a long time. Jeff wanted to celebrate with Jason, but they would likely end up in bed and it was tougher for Jason to keep up with him lately. He decided he needed to get Jason some of this "Muscle Power" supplement, but Ally kept close tabs on all the bottles and had a security system around her room for a while now.

 

He usually slept late, so he knew Ally wasn't expecting him when he got up around 7am one morning. He sneaked downstairs and caught her assembling a case of bottles in the kitchen. She had a dreamy smile as she went into another room and Jeff quickly grabbed a bottle on his way out the door and to the car. He glanced back and saw Ally holding a roll of labels and shrugging. He had guessed one was okay. Luckily for Jeff, Ally had just been in the process of internally debating whether it was fair that only Patrick was getting extra doses.

 

Jeff called Jason to get in the hot tub for him before he arrived. He figured that would make Jason thirsty by the time he got there. Jason was surprised that Jeff was awake at that hour, but glad that they could spend some time together after a busy start to the semester. Jeff's excited voice was contagious, and Jason rushed to follow Jeff's instruction.

 

Jeff came out to the back yard naked and smiling. He took a big gulp from the water bottle in his hand and offered the rest to Jason as he climbed in to the hot tub. Jason replied with a pinch to Jeff's sensitive nipple, which earned a frown from Jeff as some of the formula spilled into the hot tub. Jeff's smile returned as Jason chugged the rest of the bottle.

 

"Thanks, but what about resting up before the big game?" Jason half-joked.

 

"What's more restful than a lazy day in a hot tub with my boyfriend?" Jeff countered as he cuddled close to Jason.

 

They talked for several minutes before Jason piped up, "I don't feel like being lazy today." He stood up to take off his trunks and revealed a hard dick. "I feel like fucking, if you don't mind."

 

"About time," Jeff replied as the formula had hit him a minute or so earlier.

 

Before they could get out of the hot tub and head to the bedroom, they were having passionate, rough sex. Luckily, the hot tub withstood Jason's frantic pounding of Jeff's ass and both of their slamming bodies as Jason fired his load. Remembering the power of Jeff's loads, Jason dove onto Jeff's cock to catch his huge load. Jason underestimated how much the thought of growing more turned him on and he fired directly into the tub.

 

"That was extra amazing," growled Jason.

 

"Ha, yeah. Looks like you fired into the water. We should clean this out," laughed Jeff.

 

"The filter will get it," sighed Jason, still reveling in his potent orgasm and grasping for Jeff's cock that was getting hard once again. 

 

Jeff felt the familiar energy coursing through him and was very pleased by the supplement's boost to their sexual excitement. Jason's grasp of his dick caused it to swell instantly. "I'm ready when you are," Jeff smirked.

 

They had another two rounds of sex: Jeff fucked Jason and then they flipped and Jason fucked Jeff. Each time, one of them buried their load in the other and the other came into the hot tub. After panting and purring in each other arms for a while, they left the hot tub in search of dinner.

 

The next day, Jeff had early morning practice. Jason awoke later to a growling stomach and looking like he still had a good pump from yesterday. He went back outside to clean up and found the water bottle. He didn't really question Jeff's recent libido surges and ability to build muscle and grow others, but maybe it was something in this drink. Jason was both surprised and wary that something that seemed to work so well existed and somehow Jeff had access to it. He would have suspected something sooner if he was also familiar with any other member of the football team, but to him this development was unique to Jeff. And this supplement also seemed to work on him and would explain why those several rounds of sex were extra exciting. A glance back at his reflection also looked like he spent a week in the gym overnight.

 

He thought about the drops of the supplement that had fallen into the water and the shots of cum from both of them that they had never cleaned out. Would the stuff in the water still work? He could use the boost to keep up and maybe catch up to Jeff's growing size and strength, so he opened the hot tub up and slid in.

[magicworker]

Part 3: On Your Marks

 

"Hey, Jeff. Do you notice that chicks you sleep with get hotter?" whispered his teammate Shawn after practice the next day as they entered the locker room. Half the team was getting new, larger uniforms, so it was quiet and felt rather empty.

 

"What?" Jeff replied, ready to defend his closeted facade.

 

"A couple of us have noticed the coincidence. Hector thinks that new supplement is making his girlfriend more built. And Pauli just admitted to drinking his cum after jerking off and it gave him a buzz of energy. Do you think that muscle drink is giving us muscle cum?"

 

Jeff suddenly realized that nearly every time he had sex with Jason, Jason asked to drink his load. He was always more than happy to oblige, but now he knew why Jason wanted his juice and that was how they both were gaining size the past month.

 

"It's possible," Jeff replied tentatively. "Should we test it out?"

 

"Ugh, that's kinda disgusting. I'm not Pauli. I mean, it might be worth it for some extra gains, but maybe it's all coincidence and like, placebo effect, or something."

 

"Well, what if we tried a bigger dose, like saving it up for a week and then seeing if that much cum has an effect? At the end of the week, we could mix it with some beer and chug it."

 

"Damn, you do have some of your sister's smarts." Shawn gave Jeff a heavy pat on the back as he stood up. "I got a good idea, too," he announced as he left the room. He came back with two plastic cups the size of small pitchers. "I don't know about you, but I've been putting out some big loads, and these have lids, too."

 

Thanks to the supplement, the whole team was horny after a practice and many gave themselves release in the showers or locker room bathroom. It was almost part of the routine now, as they realized that they all had the same spike in urges after practice. To Jeff's slight disappointment, there was never a circle jerk of the muscular jocks all pleasuring themselves in front of each other. Since they were a bit like a family, Jeff admitted to himself that the reality might have been more awkward than arousing. That didn't stop him from admiring Shawn's muscles and growing cock just a bit.

 

"Looks like we're both ready," stated Shawn as he closed his eyes and started jerking.

 

Jeff was surprised that this hunk that was so squeamish about tasting his own cum was pleasuring himself right in front of Jeff, but the goal of filling a cup did make it less erotic and more task-oriented. Jeff joined him with his eyes only half-closed.

 

It wasn't long before they each fired into their cups. Shawn handed Jeff a lid and walked away to place his cup in his locker. Jeff did the same and they both hit the showers and headed home without further discussion.

 

---

 

Meanwhile, Jason sat in the hot tub for a few minutes before he felt a tingling restlessness. Several minutes later, it turned into a jittery buzz and confirmed that the hot tub water was having an effect similar to the supplement. His dick got rock hard and he started grinding into his seat before jacking off a huge load into the water. What's one more? A few minutes later, Jason felt the buzz return and followed his body's strong impulse to rush to the gym.

 

It was a great workout, maybe the best he ever had. Jason gave himself a quick flex in the gym's bathroom mirror and was intensely aroused by his insane pump that was possibly all growth. He wasn't as big as Jeff, but he was closer to his size than that morning. His dick twitched and he thought about how Jeff probably wasn't the only one with muscle-charged cum now. Not wanting to waste it, he rushed home to jack off in the tub again.

 

Even just jacking off was intense. He felt the water caress over his body, a body that was bulging with muscle. He was easily at the size Jeff was over the summer, and his cock felt bigger and thicker, too. He flexed a softball-sized bicep and felt the growing mounds of his chest as he shot his load. After a big lunch, his legs itched for more exercise, so he put his shorts back on and went for a run. He was amazed at how far he went before turning around and at how pumped and thick his legs were once he was home. He fixed himself another meal then went grocery shopping. As he filled his cart, he kept noticing how tight his clothes were and it almost seemed like he was taller, too.

 

The next day, Jason wore his largest clothes to work. He was surprised that most of his pants had gotten painfully tight around his thick, bulging quads. His arms also stretched at his sleeves, but they held. Only one of his coworkers commented on his growth, but it seemed that several people stole a glance over his improved physique. He wondered if his growth was too fast, but he flexed for himself as he cooked and ate dinner and decided he liked it. The next morning he had class, but later he sat in the hot tub for another quick jack off session and then hit the gym to grow from another workout.

 

Jeff continued to nut into his cup after practice and he assumed Shawn was doing the same. Tomorrow was another high dose day, so he called Jason to get ready for a hot night.

 

---

 

After another great practice, Jeff arrived horned up but he was not prepared for how much Jason grew from what he thought was just most of one bottle. They were almost the same size. George was there, but he quickly stepped back as the two "muscle twins" fucked rough with powerful strength. After shooting a couple loads each, they calmed down enough to invite in George who was hard from watching them. As Jason sucked Jeff off, George sucked Jason off. Jeff felt sated, but then Jason grabbed a condom, picked George up and started fucking him. George was surprised at how much Jason's cock was filling his well-used hole, and he felt really turned on, more than usual. Jason started slow, but George was being hit by the effects of swallowing Jason's seed and power-bottomed them both into a quick, final release.

 

"That was amazing," George gasped. "You two have gotten really big, and Jason, you caught up to his size quick! Got me so horny at the end there."

 

Jeff and Jason exchanged looks, each knowing that the other knew that there was a supplement that made people grow and that it made their cum do the same. Jeff wondered how many times Jason had jacked off and drank his own cum, or maybe he knows about the team growing and is sucking off other teammates?

 

Jason wondered if Jeff was okay with him growing so much; it was obviously more than what Jeff had intended with just that one bottle. After another round in the hot tub, he'd be bigger than Jeff, and then what?

 

George broke the silence by suggesting a dip in the hot tub.

 

"It's all dirty. I need to clean it," replied Jason.

 

"How about reverse strip poker?" offered Jeff, who thought Jason must have been quite busy if he hadn't cleaned the hot tub yet. He was usually on top of things like that.

[magicworker]

Part 4: Get Set

 

Jeff lost by being the first one full dressed, and George didn't stay much longer. As Jason closed the door behind him, Jeff confronted him, "Have you told anyone?"

 

Jason was a bit taken aback by Jeff's serious tone and stance in the middle of the room, but he saw the puppy dog in his eyes. "No, I figured it was a secret, since you wouldn't even tell me."

 

"Sorry, I'm so used to separating football from everything else. It's always been my own world. I've wanted to tell you, but..."

 

"But you didn't, and I guess I understand a little, but I'm kinda hurt."

 

"You understood more than I did. You figured out the cum thing way before me."

 

"I appreciate that you did share that water bottle with whatever it is in it."

 

"Yeah, I didn't think you'd grow so much from that... or are you also getting it from somewhere else?"

 

"Well, I guess I should share that discovery," Jason admitted reluctantly with a glance towards the back yard.

 

"Who is it? Oh my god, is he in the hot tub?"

 

"What? No. Who? No, wait. Remember how you spilled some into the hot tub that night?"

 

Halfway to the patio door, Jeff stopped. "And we left our cum in it, too."

 

"Exactly," Jason confirmed.

 

Jason shared his experience after soaking up the magic in the hot tub and Jeff was surprised that it sounded like it lost no intensity the second or third time that Jason used it. If anything, it sounded like he was in the tub for less and less time to get the same effect.

 

Jeff shared his experiences of the formula and let Jason in on his plan to see what effect his saved up cum would have on him. He didn't share that Shawn was doing the experiement with him. He felt that wasn't his secret to tell.

 

"Well," Jason responded, "the stuff in the hot tub lasted a few days, so a week isn't much more of a stretch. But if you want to grow faster, just use the hot tub with me." Jason's grin faded as he saw that Jeff was in conflict.

 

"I don't want to get too big," Jeff explained.

 

"I don't buy that," Jason countered. "We've both wanted to get big. We've both fantasized about being huge."

 

"Yeah, but let's just do it after football season. I don't even need to play next year, but if we do put on hundreds of pounds of muscle and become freaky powerful giants like our fantasies, I don't want to do that in the middle of being part of the team. Coach has already warned us that we're getting extra scrutiny and might have to do extra drug testing. Can you please keep this a secret for me and the team?"

 

"You could bring the whole team over for some fun in the hot tub," Jason suggested with a laugh. "Okay, so seriously, your secret is safe. Can I still use the hot tub a little?"

 

"Well, it is your hot tub. Maybe for now, you use it just enough to keep up with me? Then we can start growing together in January, I promise."

 

"Jeff, are you 100% positive it will still work then? If not, then you might be asking me to give up a big chance at a big dream of mine."

 

"Even if it doesn't, we can use another bottle to recharge it. If I have to, I'll torture Ally to get one."

 

"Your sister?"

 

"Yeah, she's the one supplying the stuff to the team. I don't know how she got it or what deal she worked out with the coach, but I'm pretty sure she tested it out on her new boyfriend who got bigger and a lot stronger over the summer. Come to think of it, there are a couple other guys I've seen on campus lately who are bigger than any college student I'd seen before."

 

"How soon could you get more from her?" Jason inquired excitedly.

 

"It might take a while. She watches the stuff like a hawk," Jeff admitted. "But when I see a chance, I'll take it. Or I could just save part of a bottle from practice."

 

Jason sighed. "Okay, Operation Musclegeddon is on hold until January. Staying for dinner?"

 

"Thanks so much," Jeff replied with a kiss. "Dinner sounds great. Want me to chop?" 

 

Jason was glad that Jeff also stayed overnight. In the morning after a cozy breakfast, Jeff headed to class, then practice. Jason worked on homework, but by the end of the afternoon he couldn't resist splashing some of the hot tub water on him before going to the gym. That didn't have the same effect as a full dunk, but he felt really good about the workout.

 

Football practice included weight training and it was clear to Ally and most of the team paying attention that Pauli was remarkably bigger and stronger. Ally knew that drinking the emissions of someone taking her supplement would also cause growth. She wondered if Pauli was sucking off other players. Her brother was looking pretty big, too, but his strength hadn't accelerated. Was he holding back?

 

Shawn also noticed Pauli's significant improvement and exchanged looks with Jeff, since it was encouragement for their plan. After practice, Jeff and Shawn brought their cum-filled cups to his dorm room. Shawn's was filled slightly more and he even had another cup there, filled even higher. "I saved what I shot here. I don't know why. I guess I just got into what we were doing. I'm definitely not drinking all of this."

 

His roommate was Hector, another teammate. He joined them with his own cup that he started. It was filled about the same as Jeff's. They each dumped a can of beer in the cup to hopefully make it more palatable. There was still a noticeable stench that gave them pause.

 

Shawn looked at his cup in disgust. Jeff was willing to try it, but didn't want to seem too eager. If he had to, he'd go first, but a second later, Hector crossed himself and chugged his down fast. "That tastes awful!"

 

Jeff and Shawn stared at Hector, waiting to see what would happen.

 

"Is it getting hot in here?" Hector asked rhetorically after a minute. "Well, I'm definitely feeling something... like horny... or like I want to workout... like with some heavy fucking weight."

 

That was all the confirmation Jeff needed as he chugged his. "Yeah, that was nasty."

 

"I dunno guys. I just can't," Shawn whined.

 

Hector couldn't stand still. "Jeff, I'll cya at the gym. I gotta go. Shawn, do it. It feels like the start of one of those good days at practice," Hector reported encouragingly as he raced out of the room.

 

Jeff offered to hold Shawn's nose as he drank it, or add another beer.

 

"That'll just make more of it," Shawn whined again.

 

Jeff was beginning to feel the energy of his dose and was anxious to join Hector in the gym. "You're really not gonna drink it?"

 

Shawn frowned and put the cup down. Jeff barely knew what we was doing as he swiped up Shawn's cup and chugged it.

 

"Holy shit!" Shawn exclaimed.

 

"Now I really have to get going. Cya Shawn, and thanks!"

[scrawn]

wow this is great! I think my favorite part of any story is when someone says "I don't want to get too big" famous last words! keep it up!

[belabarbell]

Great story. Keep going!

[Ro20316]

I can see an orgy happening in the future. Thsioe guys get too horny to care if it's a man or woman theya re fucking

[lsosuke]

*¬* more please

[loveembig]

lovin this! cant wait for more!

[magicworker]

Part 5: Grow!

 

Hector's grandfather came from Nicaragua, and his father and uncle had a successful business outside of Chicago, but Hector was the first of his family to attend a big university. He was very excited about winning a football scholarship after working hard on the field in high school. He also hoped to inspire his younger brother Luis to continue into higher education; Luis was the real brains in the family and would hopefully get an academic scholarship. Unlike most of his family, Hector was always strong and wide. Like Fred, another teammate who was half Samoan with a similar build, he wished he wasn't stuck at under 6'. At first, many people confused Hector and Fred, since they both had kind, gentle giant personalities.

 

Last year, Patrick also had a similar stocky build, but he was always more serious and aggressive. When over the summer he got much stronger and bigger and somehow a few inches taller, he clearly became the most powerful player. The team was excited for him, of course, but that was tempered by a subtle regret that it didn't happen to either of the more amiable and likeable linemen.

 

After rushing out of his room, Hector entered the familiar school gym and headed directly to the flat bench. He didn't feel like warming up much and knew from experience with the energy he was feeling that he didn't need to, so he started with a couple of plates on each side of the bar. From the first rep, he could feel the now familiar tingle of energy and rush of blood. After 15 reps, he got up and added another plate to each side. The gym wasn't busy. The evening crowd had come and gone, but there were enough people around that Hector resisted the impulse to take off his t-shirt and flex his already pumped chest in the mirror. Instead, he casually felt the warm thickness of his pecs and tris before lying down for his next set.

 

Measnwhile, Jeff nearly sprinted to the gym and he felt a huge pump in his legs and in his dick. He spotted Hector working out, but went to the bathroom to release some of the sexual tension that was seriously distracting him already. He brought the cup with him so that he could swallow another big dose of his cum. He also changed into a tank top and shorts before joining Hector at the bench.

 

Hector was adding a second 25 pound plate to each side of the bar and turned to Jeff with a beaming grin. "Where have you been? I'm on my fourth set already. I got 365 for 10 the last one. Feels awesome!"

 

"Mind if I work in?" Jeff asked as he gave his pecs a hard squeeze and they felt instantly warmed up and already harder and stronger than ever. 

 

"Sure, I'll take a couple plates off."

 

"No!" Jeff roared as he sat on the bench and laid back. "Just spot me to start."

 

Hector helped with the lift-off and was surprised at how well Jeff controlled the weight and how little he had to help with the first, slow rep. Jeff went for another rep and it seemed even easier. Hector let go of the bar as Jeff handled a couple reps on his own and helped with the last two before Jeff racked the bar. Jeff was breathing hard as he got off the bench and his tank top did little to hide how much his chest had exploded from that one set.

 

"Holy shit, Jeff. That was amazing. You're pumped huge!"

 

"Feels real good. Now it's your turn."

 

With Jeff there to spot on the last couple of reps, Hector could go to failure after ten reps. He was breathing hard and his chest was engorged and straining against his shirt, as the growing bulge in his groin was throbbing in his pants.

 

Jeff still had a grip on the bar and was flexing his biceps, pulsing against the weight of the bar. He knew he couldn't curl the over 400 pounds of weight even though he almost wanted to try. But the possiblity opened in his mind that maybe he could grow big enough and strong enough to one day curl 400 pounds or more. The image of what he would look like then caused his dick to harden and tent his shorts. 

 

Jeff refocused his attention and noticed that Hector had left. He looked around to see him heading into the bathroom with Jeff's cup, and knew he wasn't going to waste anymore of his muscle cum, either. Jeff still felt the power coursing through his veins as much as ever and thought briefly about looking around for more weight, but he was too eager for another set and nearly jumped into position under the bar. The weight felt delicious. Each rep was a gloroius flex of his growing pecs and he also felt the back of his arm thicken and his shoulders also strengthened to support the power of each press. He quickly lost count of his reps, but racked the weight when he felt he was close to unloading into his pants.

 

Hector had just walked back over. "I barely managed to catch it after running to the back of the locker room. Feel totally recharged," Hector admitted as he held out the cup for Jeff who grabbed it and rushed to the bathroom.

 

Hector couldn't help but marvel at Jeff's display of increased strength. It had taken Hector years of hard and steady training to be one of the strongest on the team and Jeff seemed close to catching up to him. Jeff was also packing on some serious pumped up size in just the first few minutes of their workout, but then Hector looked at his reflection in the far wall and saw how stretched his shirt was across the mounds of his chest and shoulders.

 

"Go hard or go home," he admitted to his encouraging reflection, as he added another 45-pound plate to each side. Hector sat on the bench and rolled his shoulders and swung his arms to encourage more power-building blood into his muscles and joints. He completed the first rep easily and took another glance to make sure those newly added plates hadn't fallen off. He couldn't help from exclaiming aloud, "Holy shit, that almost feels lighter than the last set."

 

Hector struggled with the last of his ten reps and didn't want to risk another without Jeff there to spot. He heard his shirt give pitiful cries as nearly every rep left widening gaps at the seams under his arms. As he stood, the fabric stretched tight over his upper body and he knew he wanted to finish the job. He grabbed a large plate in each hand and spread his arms in lateral side raises. The weight felt so light, but his shoulders responded with joy and his sleeves ripped apart with the motion.

 

As Jeff left the bathroom, he saw Hector explode out of his sleeves with shoulders that were pumped thick. He followed that suggestion and loaded a nearby smith machine with a couple plates for shoulder presses. Hector joined him and they quickly added more weight and made it through a few sets. The sexual buzz continued for them, but they didn't feel the need to leave and delay their next set.

 

"Damn, Jeff, I'm impressed you're keeping up with me. We're hittin' some heavy weight."

 

"Well, I did take Shawn's dose, too. He was too chicken."

 

"Oh, fuck. I didn't even stop to wonder why he wasn't here. We need to do this again," Hector added, "and I get Shawn's dose next time."

 

Jeff thought it was funny that this supplement stuff turned Hector into a cum pig. "That's fair, I guess. You're not done are you? I was thinking curls next."

 

"I'll hit a few sets with you, but I'm getting hungry and want to catch the cafeteria before it closes. I guess you're still going from that extra dose, huh?"

 

"Yeah, still going strong," Jeff confirmed with a solid upper body flex that made his muscles bulge out of his own stretched tank top. He wasn't quite as big as Hector, but definitely closer than an hour ago.

 

Hector stayed for a few sets of heavy dumbbell curls, but his hunger overshadowed his buzz and he left as Jeff grabbed a pair of 80s. At the cafeteria, Hector piled a couple of trays with about $100 of food. He was glad it went to an account paid by the school. As he left with a slice of pie, he felt over his usual belly bulge, but it was filled with food, not fat, and he could feel ridges of abs. Over his muscular forearms and arms, veins stood out more than usual. He had gotten pretty ripped, which made the fact that he felt huge with muscle even more impressive. He went back to the door of his room and suddenly noticed another effect of his accelerated growth. He was taller.

 

Over the past month, Hector thought a couple times that things were a bit lower than usual, but he was always still eye-to-eye with Fred, who he knew was the same height. It was only now that the change was noticeable and Hector realized that he and Fred and the rest of the team had all gotten a bit taller together from the formula. And he realized this was how Patrick had gotten taller, too. The muscle growth excited Hector, but the idea of getting taller was a dream come true.

 

"I need more," Hector decided to himself as he entered the room. "Shawn, are you here?"