Seeing Improvement

Story by Maxon on SoFurry

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Might be some minor errors, but as I say before, I'm n...


Might be some minor errors, but as I say before, I'm no writer and just do this fun. If there is something glaringly bad, just post about it in the comments and I'll fix it lol Enjoy... Story involves male muscle growth and masturbation...so yeah. Naughty stuff beware! EDIT 9-12-10 Redid the masturbation scene to extend it abit. ----------------------------------------------------------------------------------------------------------------------------------------------------- Seeing Improvement Jack grunted as he collapsed onto the floor mat, staring up into the ceiling of the downstairs floor, huffing out his breaths as he finished up his daily workout. He was feeling worn out and a tad dizzy from the exertion. Managing to work himself up onto his elbows he looked down his body. It was slender, not alot of muscle, but plenty of definition. He had always been a small horse, cursed with a short height below six feet and a body that gave him plenty of energy, but never gave him the size he wanted. The horse had tried all sorts of ways to build mass, using different types of protein supplements, diets, and whatever else was shoved his way. Standing up with a groan, his body aching from having run through his gauntlet of exercises, he stepped to the mirror and gave his toned body a flex. He sighed as he looked as his slender body, his abs defined, some curve to his arms and thighs, but after months of working hard, he wasn't going anywhere and hadn't seen much sign of change lately. Suddenly the doorbell rang and he perked up. Last week he had ordered a special new supplement he had found online. It of course was one of those "Too Good To Be True" ads, but they said they gave a free trial and he figured it wouldn't hurt to try another thing, even if it didn't work. Hurrying up the stairs, he got to it just as the Fed Ex truck pulled away and sitting in the chair on the porch was his package. Minutes later he was staring at a rather large sample size of the powder in a container sporting a curled bicep of immense size with the title "Flexngrow". Chuckling at the name he flipped it around to directions and to see how much he should use. Thankfully it was mixable into any drink type, so whipping up a strawberry milkshake, he started to pour in the right amount for the size. It only required a few tablespoons, but the horse was desperate and gave the jug a good shake and dumped in at least triple load or more of the powder, turning the blender on and mixing it all together. Milkshake in hand, Jack stepped back downstairs, drinking down the delicious shake as he was starting to get his second wind. A quick stretch and he was laying down onto the bench with a 175 pound bar above him, readying himself for his usual workout. A few quick pumps and he was already feeling his energy build. He grinned as the powder must have had some ginseng or one of those things they love to toss into energy drinks and marked it off as a plus when he was feeling tired. The weights kept going, up and down, the horse grunting as he was pushing it nearly twice as hard as he usually did, going past his normal reps and feeling less tired as he went. Slamming the weights down onto their holder he sat up and huffed out once, gripping his shake and downing it completely, surprised at how good it was making him feel. Fidgeting some, his shorts seeming having tightened up on him, figuring they were riding up on him as he pulled at them. Standing up, he went to the weight rack and pulled off some 20 pounders for each hand, standing in front of the more as he kept his form good, watching what biceps he had flex and strain. Again he was working harder and faster, starting to huff and snort as he saw veins throb across his arms, pushing them harder and harder till he swore that they were getting larger than normal. He dropped the weights back into place and came up to the mirror, flexing his right arm and looking at it close. It seemed larger! Perhaps he had just not noticed any change in the past week, but he was surely bigger than before. Moving into a flexing routine he could've sworn that his quads had gotten thicker, perhaps explaining why his shorts were extra tight. Grinning wide, Jack decided to celebrate by getting himself another big glass of the milkshake, nearly bounding up the stairs with excitement. Once he started drinking it, he realized he had finished another glass in almost another gulp. He knew the jug said it was only one glass, but he figured it couldn't hurt and grabbed the blender container and finished every drop of the shake concoction. Back downstairs, feeling pumped about his workouts now, he started to put the weights back onto the bench press, this time deciding to max it out up to 250, something he could barely do once or twice, but he was so energized, he knew he could do it. Grunting and prepping himself, he laid down and pushed the weight up, groaning as he realized that he knew he could handle it definitely, giving it slow and methodical lifts as he went over ten and into twenty, panting as he was amazed he was able to push so far beyond his max lifting now. Jack dropped the bar and sat up and nearly jumped back. His biceps were huge now! He moved closer and started to stare at his curled arms. His arms were definitely larger now. Hell, his whole chest looked more powerful. Pecs bulged out some, biceps had swollen up nearly twice it's size, and all the way down his body, he was looking like he had gained more mass. Gasping and realizing how tight his pants were, he started to peel them, stained with sweat as he finall managed to pull them off, showing off his powerful quads more, turning them back and forth, flexing and feeling them swell. Dear god, he must've just gained pounds of muscle everywhere in just minutes. Was the powder that powerful? Grinning wide, he went over to his squat rack, loading it up to 300 pounds and quickly went to working his body. He had never done this much before, but now he was easily working multiple reps with it and actually watching himself in the mirror in front of him start to swell. The horses muscles were bulging out right in front of his eyes, the sight exciting him as he couldn't help, but get hard, testosterone flowing through his body as his cock jutted out in front him. Jack dropped the weights back into place and stood up, flexing hard as he felt muscles strain and bones pop. The horse was growing! He figured he had grown a few inches and even more muscle, now sporting the form of an actual body builder, one he had always dreamed of getting one day. Gripping his cock, he gave it squeeze to find it extra sensitive and fuller than normal. Even for his size, he always had a very nice cock, a foot long and and a great handful, but it felt even bigger. Jack was quickly becoming something he could only fantasize about...and he wanted more! Tossing on more weight, pushing it up to 500 pounds on the squat bar, he quickly went to work, struggling at first, but once his muscles caught up, it became easier, realizing that he was now even taller, having to set the weights on a higher holder. At his full size now, he must've gained over 50 pounds in just muscle, maybe more and had grown over six feet, pushing to seven. The next half hour was a blur for him, constantly increasing bar weights, flexing, breaking boundaries he previously had till he stood in front of his wall mirror. He was panting heavily, his body a dripping mess of sweat, staining the floor as he looked at someone he no longer recognized in the mirror. Jack had become a hulk of muscle. He was 9 feet tall, having to stoop so his head wouldn't hitting the ceiling. 600 pounds of muscle swelled out across his frame, his pecs bulging out so far, able to bounce them with his power as veins snaked across his body. The horse was a powerhouse, possibly topping some of the body builder greats and shaming porn stars as he gripped that massive rod between his legs. It had pressed out to three feet and was so thick, that he couldn't grip it with both hands, the head mashed agaisnt the mirror, drooling pre that smeared against the glass, having never been more turned on than he was right now. Sitting down, the floor creaked under his weight, shaking weights and furniture around him as he thumped to the ground, enormous tool swaying around the air for him till he grabbled the pulsing length and squeezed what he could with his power grip. He could feel the thick veins squirm and throb with every tug of his meat, more pre gushing out onto the floor and staining the carpet. Groaning into the empty house, his huge hand molested the flared tip, rubbing the pre into the glistening black flesh, letting it spill through his fingers. Jacks head was a flood of lust and horny energy, bringing his fingers to his lips and tasting his musky power, licking the hand clean and using it once again to make that length beg for mercy as he felt the orgasm build .

Feeling that something was missing out, he reached down and groped his heavy nuts, each one the size of a canteloupe and making him grunt when he squeezed. They were churning with life, aching as they felt like they were still growing, so large that they were nearly down to his knees when they stood and he could feel the power building within them. Seeing how large he was, the muscled beast leaned forward, trying to engulf his flare, but it was too large for him, only able to suckle and lap across the cock head, drinking up his neverending supply of pre as he slithered his tongue into the cum slit. The second he stuffed his tongue as deep as it could go, it was immediately forced out by the eruption of his seed spilling out. So powerful was the climax that the horse couldn't keep his mouth on it. Instantly he gagged on the influx of cum as it filled his muzzle, unable to drink it fast enough and just let it arch over his head. It splattered across the ceiling, lacing his fur with thick, dripping, shots of cum, his sweating and heaving muscles straining and growing slightly one last time as he couldn't stop the climax. Once he was dripping from head to hoof with cum, he bent his cock and shot it all over the mirror, watching his body start to distort and smear from the cum coating it, lasting for minutes as he pumped what seemed like constant pint loads of his musky mess. Finally Jack ended his release, falling back onto the floor with a ground shaking thud, his whole body a sticky mess, laying in a small pool of it that had forever stained the downstairs with his overwhelming scent. Nearly falling asleep, another ring at the doorbell went off, shaking him out of his lustful daze, realizing the time. His buddy, a rather large clydesdale that he was always jealous about, was wanting to come over and hang out. Standing up, his cock still hard, his body dripping with cum and sweat, he smiled as he made for the door... Jack couldn't wait to show off his improvements to his friend.