Natalie 1

Natalie was a year younger than me. We spent the same amount of time in gyms and fitness classes. I came out looking like a swimmer, but she came out looking like she could out bench any other kid we knew. And as we got older, she only got bigger.

Some sisters like to borrow their brother’s T-shirts for a big and baggy look. Not Natalie. When she put on one of my shirts, they would stretch so tightly over her blown-out pecs and abs that it looked ready to tear.

But I was totally supportive of her. In fact, as we finished high school and got into college, we shared an addiction: muscle growth. For me, it was an obsession from the outside looking in. For her, it became a way of life.

It's like she never needed to rest. When we weren't in school, Natalie was either lifting weights or eating. She stay up well into the night, keeping me awake with the banging of weights, dropping them on the floor, grunting, groaning and growing. I have to admit, even though I knew it wasn’t quite right, I sometimes masturbated thinking about her uncompromising desire to push herself bigger and bigger.

One night, Natalie disappeared with her friends Veronica and Jessica down into the basement gym. I waited until our parents were asleep, then I snuck out of my bedroom and stealthily made my way down to the basement. The stairs creaked--I had to go slow. I peered carefully around the corner, my heart pounding in my ears. Spying on my sister could get me into a lot of trouble! I wasn't afraid of my parents, they were pretty lenient, but my sister?

I watched her win a fight in high school. It was totally one-sided. She was so much bigger than any of our classmates. But some male jock decided to challenge her. She humiliated him, taking him down with one punch, then using him as a barbell, pressing him over her head over and over. When she was done, the guy could barely show his face around the school again.

With these thoughts in mind, I leaned over just enough to see around the corner. I swallowed hard.

In the middle of the room, surrounded by racks of black dumbbells, an adjustable weight bench, and a towering squat rack, my sister's back rose, a huge golden brown v like the hood of a gigantic cobra. The wavy black hair of her head nearly scraped the ceiling--she was quickly outgrowing that room. Her back and shoulders were covered with a layer of sweat. I'd seen her like this often, but as my eyes traced the bulging muscles further down toward the ground, my admiration turned to excitement and then to astonishment.

She was naked from head to toe. Her striated ass flexed and unflexed as she stood there. Behind her, Veronica kneeled, the long fingers of one hand urgently feeling her striated glutes. Her other hand was wrapped around her thigh, or as much as her hand could reach given the hypertrophied muscle in her mammoth thigh. Veronica’s curly blond hair hid most of her upper body but I could tell she was topless. Her bra was under Natalie's foot.

On the other side, sharing her, because honestly there was more than enough beef to feed them both, Jessica had thrown herself around her waist. She was the bustiest girl in school worth talking about, her double D's pressed against her thigh. She was grinding against her, humming softly, playfully.

Veronica and Jessica, and even Natalie hermself, all had their eyes fixed on her reflection in a mirror on the opposite wall. It showed her body from the waist up. Well, as much of her as could fit in it, at least.

"What's next?" she said, looking into her own eyes. Hands clutched down in front of her crotch, she bounced her melon-like pecs for them, sending ripples of muscle caressing up through her chest slowly, one side at a time. Her breasts were practically nonexistent, completely overshadowed by the development of her monster pecs.

"More pecs again," the girls moaned.

Jessica was rubbing her breasts against him, "How big can they get, Natalie?"

"Pump them up, baby," Veronica said between sensual kisses lathered on her hips and ass.

"More?" she laughed, slipping back under the bench press bar. "How much this time?"

"450!" one of them yelled.

"Load it up!"

The girls helped each other fit more weight at either end of the bar, devouring her body with their eyes at every chance they got. I did the same. Veronica was definitely topless, I could confirm as a brute fact. Jessica was practically there. Turns out her long black hair, gathered into sweaty strands, obscured a black tank top that was similarly soaked with sweat, doing nothing to hide the swollen nipples of her swollen breasts.

But my eyes couldn't leave my sister's body. What a teenage muscle freak. Lying on her back, head toward me, I could look straight down her impressive length. Just past her thick neck were insane pecs, rising like bread from her body, sticking out like twin toasters stuffed under her skin. Muscle tits. I couldn't even see her nipples--or his abs, for that matter--past those two brown mountains jutting from her torso, slick with sweat.

She put her arms under the bar, ready to lift. Her chest nearly touched the bar already. She needed a much wider bench than the one she'd been using since she was still 16. Her guns were like footballs, overinflated, looking like they'd tear at the seams. Her forearms rippled as she got her grip adjusted.

I stuck my knuckles in my eyes as the girls finished loading up the weight, begging her to start. She flashed that cocky, confident, macho grin at them and they would've melted into pools if they could. I nearly did. I had to adjust my stance, I was quickly running out of room in my shorts.