My finger slipped to the same button it had been using all day: drain.
I felt a spark hit me, where the big man's hand rested on my shoulder. The spark became a rush of heat, filling me, my entire body humming with it as it spread throughout me, until it felt like I would burst. And then I did burst. But I didn't fall apart. On the contrary, my muscles bulged and swelled outward, growing bigger and harder, power surging through me. My shirt, already stretched to the point of ridiculousness, shredded right off of me, unable to contain my growing mass any longer. My shorts soon followed, leaving me standing in nothing but a pair of pitifully overtaxed underpants. I watched as the big man diminished before my very eyes, getting shorter and thinner, his magnificent muscles losing their size, retreating into his shrinking body, his clothes becoming loose around him.
He jerked away from me, falling back against the weight bench. I was still buzzing from the experience of draining so much out of him. I glanced down at the Chronivac, and grinned as I read the output. I had drained a solid foot of height from him, and a hundred and fifty pounds. He was still a fine specimen of a man, standing 6'3" tall, and weighing a very muscular 275 pounds. But he paled next to my 7'5" frame, packed with 500 pounds of pure muscle.
I let out a deep groan of pleasure, reveling in the sensation of being in such a powerful body. Below, my cock swelled, reflecting the excitement I was feeling. It pressed forward against my underpants, causing the crotch to bulge obscenely. Then it burst through, ripping the fabric asunder, rising to attention, a magnificent, fourteen-inch long pole, thick and potent. I couldn't suppress the low, racking moan that followed, as I flexed one massive muscle after the other, feeling them respond to my command, hard and powerful beyond belief. I reached down, my biceps and pec pressing against each other, and cupped one of my big balls in my hand, the hefty nut the size of a baseball. I looked over at the man I had just drained, and grinned wolfishly. He scampered backwards, then fled outright, heading for the locker room, trying to hold up his oversized clothes as he ran. I chuckled, then ran after him, my huge thighs getting in each other's way, causing my cock and balls to bounce lewdly with every big step. He had a head start, but I was bigger and faster, and I was catching up to him...