When your muscles are growing bigger. Especially relevant if the character doesn’t have much musculature to start with. This can involve muscles being grown conventionally (i.e., hard work at the gym), but usually there’s something more going on that gives the growth a push.
Compare Muscle, which can be just about having big muscles, and Size Growth, which involves getting bigger overall.
Other tags that also fall under the category “Muscle/Strength”: Muscle Breast, Muscle Theft, Muscles.
Stories found: 719.
Something missing? We’re always looking to improve the way our stories are tagged. If you know of a story that should be added to this page, please go to the story page and use the tag suggestion feature—the link is directly under the list of tags.
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Complete story list for Muscle Growth:
1313 Raven Lane (revised) by WordShop (4 parts) CGrow Hair Ghost Hallow Cock MGrow Musc Nonc Grow Two young guys find themselves in trouble on Halloween night after a party. They hide in an old house with the reputation of being haunted. We don't believe in haunted houses, now do we? Added Sep 2017 • 11.1K words | ![]() ![]() ![]() ![]() ![]() 17,521 views |
1313 raven lane (a halloween story) by WordShop (4 parts) MGrow Musc Supn Added Nov 2002 • 11.1K words | ![]() ![]() ![]() ![]() ![]() 17,593 views |
A.I. by Corwin (11 parts) AI Andr Cock Mind MGrow Musc Bond Tim’s homemade A.I. software decides to help him get huge. Added Dec 2013 • 30.6K words | ![]() ![]() ![]() ![]() ![]() 27,861 views |
Above average by Ziel (28 parts) CGrow Cock HyCock MGrow Musc Alan starts out as just your average college boy. Then a strange, magical artifact comes into his life, and he starts becoming bigger—almost remembering the ways things were, when his muscles and cock weren’t, with each orgasm, more and more above average. As the effects spread, Alan knows he must understand what’s happing to him and his friends—and also that he must be the biggest, most muscular, most hypercocked stud of all. Added Apr 2013 • Updated Dec 2018 • 130.4K words | ![]() ![]() ![]() ![]() ![]() 180,649 views |
The accidental wizard by nolanspice (2 parts) AgeDown MGrow Musc PSD Rep Grow Tf Added Jan 2006 • 2.9K words | ![]() ![]() ![]() ![]() ![]() 14,309 views |
Acting out by Cris Kane (3 parts) CGrow Cock MGrow Musc A straight actor preparing to audition for a gay role receives help getting into character from his gay friend and a couple of magic rings, but their mind-altering effects lead to unexpected outcomes for Quinn and Damon alike. Added Aug 2014 • 24.6K words | ![]() ![]() ![]() ![]() ![]() 20,919 views |
Ad man by FanTCMan CGrow Hair Cock HyCock Cum Infect MGrow Musc Nonc 2Gay Added Dec 2003 • 8.6K words | ![]() ![]() ![]() ![]() ![]() 51,036 views |
Adam’s first growth spurt by MDS Bro Giant Cock MGrow Musc Grow Adam comes home from a day of being bullied at school to find he definitely won't have to worry about anything like that after today. Added Nov 2016 • 2.4K words | ![]() ![]() ![]() ![]() ![]() 25,611 views |
Addiction by Hatman Cock MGrow PSD Added May 2010 • 1.9K words | ![]() ![]() ![]() ![]() ![]() 18,763 views |
Administrator by FanTCMan CGrow Dumb Cock MGrow Musc Added Apr 2003 • 1.8K words | ![]() ![]() ![]() ![]() ![]() 18,161 views |
Admiring the changes by Josh Barrett MGrow Musc After months of hardly any progress at the gym, Alex finds a strange stone that makes him into what he’s always wanted to be. Added Jun 2014 • 2.0K words | ![]() ![]() ![]() ![]() ![]() 19,285 views |
Against protocol by BRK CGrow Dig Cock Cum XArm XLimb MGrow The mods they give to MetaMorph’s in-house scientists to beta-test are supposed to wear off after two weeks, but Jackson’s mods are inexplicably persistent—and they’re starting to pile up. Added Nov 2019 • 2.4K words | ![]() ![]() ![]() ![]() ![]() 1,707 views |
Ah! my god by Josh Arima Infl MGrow Musc Added Jun 2005 • 4.3K words | ![]() ![]() ![]() ![]() ![]() 23,414 views |
Alex by Jcry123 Cock MGrow Musc A young guy decides to try out a gift from a random stranger that might making him bigger. Added Nov 2011 • 1.5K words | ![]() ![]() ![]() ![]() ![]() 26,572 views |
Alex in Wonderland by Anarchy A (3 parts) CGrow HyCock Cum MGrow Musc Shr Grow Alex follows mysterious man into a forest, and quickly finds himself in a strange new world, deep below the ground. Added Jan 2016 • Updated Apr 2017 • 6.2K words | ![]() ![]() ![]() ![]() ![]() 28,819 views |
Alien implants (revised) by WordShop (2 parts) CGrow Hair Cock MGrow Musc Symb Three twenty-year-old military brats have a close encounter that leaves behind unexpected surprises for them all. How do three young guys deal with something that they cannot even begin to explain or understand? Not to mention the very strange dreams… Added Nov 2017 • 3.1K words | ![]() ![]() ![]() ![]() ![]() 12,892 views |
Alien tormentors by James Fourlegs Alien Cock XArm XCock XLeg XLimb MGrow Musc Rep Unseen aliens juice the daylights out of their captives. Added Dec 2004 • 1.0K words | ![]() ![]() ![]() ![]() ![]() 15,460 views |
All good things by Anon Amon (100 parts) Bro CGrow CumInf Balls Cock HyCock Cum Immob Infect MGrow Musc NipCum Twins After the discovery of an ancient artifact, life is changed forever for a group of college students who have bigger things to worry about than getting ready to start classes. Added Feb 2017 • Updated Aug 2019 • 115.5K words | ![]() ![]() ![]() ![]() ![]() 118,440 views |
All or nothing by Double-U MGrow Musc Grow Take a step into Allan Rader’s thoughts and explore a strange new casino that hasn’t opened up to the public yet. Will Allan get some BIG returns? Added Sep 2016 • 2.2K words | ![]() ![]() ![]() ![]() ![]() 8,966 views |
All your wildest dreams by FloralSpaded (2 parts) CGrow Cock Infect MGrow Musc When Walker has his hot friend Joe over for the night, things get out of hand and all of Walker’s wildest dreams come true. Added Jun 2018 • 1.5K words | ![]() ![]() ![]() ![]() ![]() 8,869 views |
Alpha by CharitysSongbird Fur CGrow Dom Taller Balls Cock HyCock MGrow Musc Self Grow Tf Were Used to being smaller than his office mates, especially his crush Tavy, Ritzy is stunned when he suddenly starts getting bigger and furrier, even as the impulse to dominate seeps into his personality. Added Aug 2018 • 14.3K words | ![]() ![]() ![]() ![]() ![]() 17,893 views |
Alpha House by NBCK99 (3 parts) CGrow Cock Pher MGrow Musc A collection of young guys take part in a reality series where the action includes everyone spinning a wheel and getting random body changes. Added Mar 2015 • Updated May 2015 • 11.9K words | ![]() ![]() ![]() ![]() ![]() 43,556 views |
Alpha male by Josef Howard (5 parts) MGrow Musc Super A gay man wakes one morning inside the body of the (formerly) straight star-spangled super-hero AlphaMale. Everything is terrific until AlphaMale’s studly sidekick finds out his body is inhabited by an imposter. Added Jul 2002 • 15.1K words | ![]() ![]() ![]() ![]() ![]() 29,378 views |
Alpha master god king by MaleHypnoDomination and Mr. GreyMan Dom Mind MGrow Musc An unassuming househusband accidentally becomes the God-King of the world. Added May 2016 • 7.6K words | ![]() ![]() ![]() ![]() ![]() 14,975 views |
Alpha product series by Chet Boner (18 parts) Bro CGrow Dad Balls Cum MGrow Musc NipCum 19-year-old Trent accepts a free trial product series called “Alpha Product” in exchange for his feedback. He receives the first product very quickly, but doesn’t know how many people would be affected and grow as a result of this choice! Added May 2017 • Updated May 2019 • 22.6K words | ![]() ![]() ![]() ![]() ![]() 47,057 views |
The Alpha by Ziel Fur Hair Cock 2Anim MGrow Musc Nonc Tf Harrison’s chance encounter with the creature that has been stalking the campus changes him in ways he’d never thought possible. Added Dec 2017 • 4.1K words | ![]() ![]() ![]() ![]() ![]() 12,016 views |
Amplifications by Also Known As (5 parts) Cock MGrow Musc Grow Series Added Jan 2014 • 22.6K words | ![]() ![]() ![]() ![]() ![]() 16,698 views |
And then he came by Teen Hulk (2 parts) CGrow Cock Cum Infect MGrow Musc Self David's dream is interrupted … but only until his next visit to the gym. Added May 2002 • 7.4K words | ![]() ![]() ![]() ![]() ![]() 29,653 views |
Andy finds Cockr gives and takes away by Clearlyhere (5 parts) CGrow CShr Dom Cock MusBr MGrow Musc Series Andy has mixed feelings about his experience with the Cockr App. He discusses it with his friend Bill. Bill comes up with a plan that is mutually beneficial. Added Oct 2017 • Updated Jun 2019 • 14.0K words | ![]() ![]() ![]() ![]() ![]() 19,957 views |
Angelo and Adrian by WordShop (8 parts) CGrow Grad Pher Infect MGrow Musc Genius Angelo and sweet Adrian are both scarred by their pasts. Angelo has to accept change in his life, and accidentally, without intending it, Adrian is forced to accept a new life for which he is not at all prepared. Added Oct 2017 • Updated May 2018 • 42.9K words | ![]() ![]() ![]() ![]() ![]() 17,260 views |
Anything to grow by Big Bull Trainer Dumb Immob MGrow Musc Grow Tf There are some with an unquenchable desire to not only grow, but to grow to unnaturally large proportions, and will go to any lengths to do it. This is a story of just such a person. Added Aug 2016 • 7.8K words | ![]() ![]() ![]() ![]() ![]() 25,416 views |
An app for the ages by Seth Peterson Fem CGrow Dumb Hair Taller Cock MusBr MGrow Musc Nonc An app that can change people on a whim? A totally ego-maniacal straight boy with a strong distaste toward his nerdy, unappreciative roommate? Well, things can only get more exciting from here, can’t they? Added Dec 2018 • 3.1K words | ![]() ![]() ![]() ![]() ![]() 11,247 views |
The application by SuperWaffle (8 parts) Fur MGrow Musc Grow A powerful story in which an anthro fox named Bradley learns that a body-morphing app is a wondrous, life-changing thing for himself and for new friends as well—if it doesn’t fall into the wrong hands, that is. Added Apr 2015 • 44.5K words | ![]() ![]() ![]() ![]() ![]() 31,789 views |
Are you sure by Dream Big (5 parts) Bi CGrow Taller Het Balls Cock Cum MGrow Musc Race Self Grow Suddenly awash with money, Bill takes the plunge and follows the stories of secretly augmented men and women to a remote lab where they promise to fix everything he doesn’t like about his body. Added Nov 2019 • 6.2K words | ![]() ![]() ![]() ![]() ![]() 2,974 views |
At the cafeteria by BRK (3 parts) CGrow Cock Immort Infect XCock MGrow Musc Sugg Jordan meets up with his friends at the cafeteria very late one night before midterms. They end up making a game of passing around Ethan’s ancient-recipe birthday liqueur and telling strange rumors about each other, with some unintended consequences. Added Jun 2015 • 8.4K words | ![]() ![]() ![]() ![]() ![]() 20,529 views |
Attil|a|rt by LAComplex CGrow Viol Taller Giant Cock MGrow Musc Grow The 15-foot phenomenon Attila pays a visit to the world-famous Michelangelo’s David statue, having decided to offer to the world a new reference for manliness and virility. Added Mar 2019 • 7.0K words | ![]() ![]() ![]() ![]() ![]() 3,892 views |
Augmentations by Also Known As (18 parts) CGrow Cock Scent MGrow Musc Grow Series Pursuing a fantasy, a successful man hires an erotic partner who’s been augmented, but the kinds of pleasures his new lover can share with him are far beyond anything he’d imagined. Added Jan 2014 • 98.8K words | ![]() ![]() ![]() ![]() ![]() 26,828 views |
The awakening (muscl4life) by muscl4life (2 parts) CGrow Fant Cock MGrow Musc Added Nov 2013 • Updated Dec 2013 • 10.3K words | ![]() ![]() ![]() ![]() ![]() 12,898 views |
Away game by spacevlad (2 parts) MGrow Gut Musc PSD Grow College freshman Adam is the smallest guy on the football team. On an away game road trip, he gets paired up to room with Wyatt, the biggest offensive lineman on the team. Adam tries to control himself as they are forced to share a bed, but Wyatt’s massive body is hard to resist. Added Dec 2017 • 6.3K words | ![]() ![]() ![]() ![]() ![]() 14,754 views |
Baby brother by Shawn D. Stewart Bro CGrow Taller MGrow Musc "Kev, did you see a glass here?” “Whoa, man, was that yours? Sorry… I was really thirsty…” “You drank it!?” Aaaaand off we go! Added Mar 2003 • 2.7K words | ![]() ![]() ![]() ![]() ![]() 88,071 views |
The band by BRK (2 parts) Cock HyCock XArm XLimb MGrow PSD Rep Grow Sugg Eager to improve his personal appearance for the sake of the band he’s fronting, Ryan finds a solution that involves dramatically changing how he looks. Now he just has to keep the weird parts of it secret from his friends and roommate. Added May 2002 • 7.5K words | ![]() ![]() ![]() ![]() ![]() 13,765 views |
Bara juice by Smokey Digsby Fur CGrow Cock MGrow Musc Baxter, a limpy junkyard poodle, starts taking supplements to enhance his body. What he gets, however, is a unexpected change during a very important date with the guy of his dreams. Added Aug 2017 • 2.6K words | ![]() ![]() ![]() ![]() ![]() 8,211 views |
Basement full of muscleboy gods by Krisiar Btaur CGrow 4Legs Cock XAbs XCock XLeg XLimb MGrow Musc NipCum Added May 2011 • 2.0K words | ![]() ![]() ![]() ![]() ![]() 52,577 views |
Baxter prep by BRK MGrow Musc Grow A candid interview with the man who admitted dosing the stars of his reality TV show, Baxter Prep, with serums that altered their bodies—without their knowledge. Added May 2011 • 2.0K words | ![]() ![]() ![]() ![]() ![]() 18,744 views |
Be careful what you download by Tereshky CGrow Cock HyCock MGrow Musc Nude SocMed Tim Ryan learns a lesson about using Instagram filters. Pick to the wrong one and it might change more than your pics. Added Dec 2019 • 3.4K words | ![]() ![]() ![]() ![]() ![]() 1,699 views |
Bear’s den by Pfefferooney (3 parts) Belly CGrow Hair Balls Cock HyCock Infect MGrow Musc NipCum Grow David is a small university student and he wants nothing more than to be, and be with, an enormous man. On a fateful day, he stumbles upon someone who can make his dream come true. Added Mar 2019 • Updated May 2019 • 9.0K words | ![]() ![]() ![]() ![]() ![]() 12,188 views |
The becoming by Musclebuff (2 parts) MGrow Musc Added Oct 2002 • 6.0K words | ![]() ![]() ![]() ![]() ![]() 11,647 views |
Becoming a muscle god by Corwin CGrow Dom Giant Cock MGrow Musc Grow Mike discovers what it's like to become a muscle god, and how awesome it is to turn the tables on the coach who’d thought he’d get to dominate the newly-grown Muscle Mike. Added Apr 2018 • 3.1K words | ![]() ![]() ![]() ![]() ![]() 13,544 views |
Becoming the ultimate man by musclestory Hair MGrow Musc Added Aug 2003 • 4.6K words | ![]() ![]() ![]() ![]() ![]() 67,344 views |
The beefening by Benjamin Skipper CGrow Dom Hair Balls Cock MGrow Gut Musc Nonc PSD Grow Spencer's roommates have been growing into huge hulking beasts, focused on working out, having sex—and now, turning Spence into one of them! Added Feb 2018 • 2.3K words | ![]() ![]() ![]() ![]() ![]() 24,131 views |
Being big by BigBoy Cock MGrow Musc Added Jul 2002 • 1.0K words | ![]() ![]() ![]() ![]() ![]() 51,774 views |
The belt by Marc MGrow Musc Added Jul 2002 • 1.5K words | ![]() ![]() ![]() ![]() ![]() 9,779 views |
Ben gets huge by spacevlad (8 parts) Giant Scent MGrow Musc PSD Grow Matt, a kicker on a college football team, befriends Ben, a burly, bearish, muscular offensive lineman with a desire to get bigger. Matt is … able to help him with that. Added Jun 2016 • 17.3K words | ![]() ![]() ![]() ![]() ![]() 35,383 views |
Bending the straight boys by iciss (2 parts) Bro CGrow Cock MGrow Musc 2Gay Twins Added Jan 2008 • 10.9K words | ![]() ![]() ![]() ![]() ![]() 44,489 views |
Ben’s escapades by Kaelan (9 parts) Bro CGrow Grad Balls Cock HyCock Cum MGrow Musc NipCum Self Ben undergoes medical treatment to make his genitals unusually huge, but is he ready for the dramatic changes that it’ll bring to the rest of his life? Added Feb 2018 • Updated Jun 2018 • 33.6K words | ![]() ![]() ![]() ![]() ![]() 30,540 views |
The berries down by the creek by Krisiar CGrow HyCock XAbs MGrow Musc NipCum Grow Added May 2011 • 3.3K words | ![]() ![]() ![]() ![]() ![]() 40,695 views |
Best wishes and regards by Lemur MGrow Musc Added Jul 2002 • 2.2K words | ![]() ![]() ![]() ![]() ![]() 10,751 views |
The bet by JayPat (4 parts) MGrow Musc Grow A simple operation can turn you into a hunk as hot as the football players you dream about. Do you even ask what the downside is? Added Oct 2012 • 31.8K words | ![]() ![]() ![]() ![]() ![]() 25,915 views |
Bet you can’t have just one by Ziel CGrow Giant Balls Cock HyCock MGrow Musc Grow Vincent was given pretty clear instructions with the new growth supplement his pal invented: “Only take one pill.” Added May 2017 • 5.6K words | ![]() ![]() ![]() ![]() ![]() 18,998 views |
Big by Joe Bell MGrow Musc Added Jul 2002 • 0.9K words | ![]() ![]() ![]() ![]() ![]() 19,372 views |
Big Frank by Unknown (4 parts) MGrow Musc Added Jul 2002 • Updated Jun 2019 • 3.3K words | ![]() ![]() ![]() ![]() ![]() 18,609 views |
Big is better by XH4M (32 parts) Cock Hypno MGrow Musc NipC Pete and Sam experience epic growth, unexpected adventures, and sweet romance. Added Oct 2003 • 111.5K words | ![]() ![]() ![]() ![]() ![]() 56,037 views |
Big men on campus by Aardvark and Cris Kane Viol MGrow Musc Grow The Alpha Alpha Alpha fraternity recruits a prospective pledge who will need a few adjustments to fit in. Added Oct 2014 • 22.4K words | ![]() ![]() ![]() ![]() ![]() 20,448 views |
Big project by muscl4life Cock MGrow Musc Grow Added Nov 2013 • Updated Dec 2013 • 5.3K words | ![]() ![]() ![]() ![]() ![]() 15,947 views |
A big year by Dancer CGrow Cock Immob MGrow Musc PSD Grow Andy gets a big surprise when a fortune teller tells him he will have big gains this year. Added Mar 2018 • 4.3K words | ![]() ![]() ![]() ![]() ![]() 12,358 views |
Bigger issues by muscl4life (6 parts) PermaBoner CGrow Cock HyCock XAbs MGrow Musc Grow 2Gay Series Thanks to Kyle, Sean discovered his serum works better than he expected… And now his freaking muscular lover each time is more intoxicated with his newly found POWER, and can such difference of muscular capacity make the couple apart? Added Dec 2013 • 47.0K words | ![]() ![]() ![]() ![]() ![]() 102,952 views |
Bigger issues: Ultimate growth by muscl4life (6 parts) CGrow Cock HyCock Infect MGrow Musc Grow Series Added Nov 2013 • Updated Dec 2013 • 31.8K words | ![]() ![]() ![]() ![]() ![]() 29,282 views |
Biggest by Also Known As (2 parts) PermaBoner Cock MGrow Musc Added Jan 2014 • 9.2K words | ![]() ![]() ![]() ![]() ![]() 16,534 views |
Biggest man of them all by muscl4life Cock MGrow Musc Added Nov 2013 • Updated Dec 2013 • 7.4K words | ![]() ![]() ![]() ![]() ![]() 16,890 views |
Biological inheritance by Frank Easky CGrow Balls HyCock MGrow |