Home from her Junior year in college, Amy had stopped by to say hello and head out with her friends. Standing in the bathroom, Amy was adjusting her bra under her crop top and staring at her beautiful face in the mirror, looking for any need to touch up her make-up. Not that she needed much make-up anyway. Her deep blue eyes sparkled as she wrinkled her small button nose and gave a smile of her pearly whites, looking for any red lipstick on her teeth. She shook her long blonde hair and sighed happily. Amy knew she was hot. Hot enough to get any man she wanted. But it wasn’t enough. The men all treated her like some kind of air head. And the jocks she dated often pushed her around. She could control them with her beauty and killer body, but in the end their superior strength always put them in control. Sighing, Amy realized that this was simply the order of things. She would just have to use her charms to her advantage, but worried that it would never give her the power she desired. Stepping back from the counter, Amy adjusted her barely legal jean shorts and stood up on her bare feet, stretching her long legs.

As Amy’s heals touch the tile, Amanda took aim from across the hallway behind her bedroom door and fired. And as soon as the beam hit Amy, she let out a pleasurable breath, as though she had just gotten a shot of B 12. Goosebumps rose up along her skin and a warmth engulfed her entire body. Her ears rang and her nipples pressed hard against her bra, momentarily weakening her knees. And just when she thought she could take no more, the pleasure increased and her heart began to pound hard and sweat began to bead along her perfectly tanned skin. Amy tilted her head back and moaned, reaching down to rub her crotch. But before she could she let out a grunt as her muscles tensed quickly across her body. And then released. And then tensed again. The process continued as Amy let out an uncomfortable exhale. Looking into the mirror, Amy soon realized that then tension of her muscles was having some kind of effect across her body. She looked. Bigger? Wider? Thicker?

Controlling her breathing by taking deep breaths in rhythm with her body’s near convulsions, Amy soon realized that her body was indeed changing. And changing with growing muscles. How this was happening was not an immediate concern. Just the fact that it WAS happening began to turn her on greater than anything had ever excited her before. Each tension was making her muscles bigger and curvier. And as the warmth circulated around her body and penetrated her muscles, that growth was also increasing her strength as the muscles became denser.

Amy soon winced as her expanding back and pectorals was causing her bra to press painfully across her back and digging into her breasts. Tensing her upper body with conviction, she seemingly willed her body to overcome the pain. To grow strong enough to withstand the pressure. Her breasts, now mashed against her thickening pectorals soon rose to the challenge and began pressing back against the bra, bending the under wiring as the softest part of her body grew stronger and harder, filling her awesome double Ds with even more awesome muscles, backed by even stronger pectorals. Within moments the material began to grown and buckle and stretch and rip. Pulling her arms back and grinding down, Amy tensed her chest hard, snapping the bra beneath the now overstrained top that was ripping up the sides loudly. Bringing her long, muscle loaded arms forward into a crab flex, she plowed even more devastating muscle into her formidable upper body and destroyed her top and bra with one hard contraction, laughing as the material shot away from her body in several pieces and fell to the floor. Her muscle breasts sat magnificently atop her striated pectoral shelf, giving her an upper torso that would outshine any female bodybuilder alive.

Standing on her toes, she tensed hard, sending wave after wave of muscles pounding into her legs, expanding her calves well passed 20 inches and her thighs well beyond 36 inches each as beefy, curvy quads separated, split and grew, sending a massive tear drop to cover her knees and enough thickness upward to split the sides of her jeans. Tensing her narrow stomach, blocks of insanely separated, steel hard plates rose up across her narrow midsection like cobblestones. Smiling and raising her arms up, Amy tensed and titanic muscles exploded across her limbs. Meaty forearms curved down to her narrow joints and back out into twin cannonballs of expanding biceps and triceps. Tensing and un-tensing pushed veins to the surface and rippled the massive muscles in an incredible display of female superiority. Her triceps belly’s hung low and deep while her bicep splits widened as the heads sought space to grow, rising up above her thick shoulders and up her forearms into twin mountains over 24 inches around!

Amy felt the warmth subside as her muscles stopped their involuntary flexing. Slowly bringing her arms down, she slowed her breathing and licked her lips. She was by far the most muscular, sexiest woman alive. She had to be. Her muscles glistened across her flawless body and rippled with strength and power. Her breasts defied gravity and stood out proudly on her massively muscled chest. Her curves were devastatingly feminine. Hell, her entire body seemed to glow with vitality. And she had to wonder, just how strong was she? Were her dreams of being in control now within her grasp?

As the last of the power from the beam finally settled down, Amy turned her head to try and understand how this could have happened. She got a glance of her sister Amanda and smirked. Amanda gave Amy a shocked look and slammed the door quickly. Amy turned quickly and ran over to Amanda’s door. Whatever had happened, Amanda must have been the cause. And whatever it was that Amanda had that could do such a thing, Amy wanted for herself.