Julie smiled "What a wonderful idea! I was never able to press a whole lot, but I feel like I might beat my record!" She skipped over to the bench presses, her muscled legs shifting and bulging with each hop. Only after a few minutes on the bike, she'd already put any gold winning cyclist to shame, and even the simple act of skipping made her legs grow stronger. "Come on, you have to tag me" Tom walked over to her while she was getting ready under the bar, 5 pounds loaded on each side, together with the 20 pound bar that would make 30 pounds, not too much of a challenge. Tom got into position behind the bar and Julie put her hands under it. "That's about as much as I usually lift, I don't want to hurt myself right at the beginning" With a feminine grunt, she lifted the barbell from the rack, visible straining, though her arms were already thickening from the short lift and keeping the weight up, her chest starting to rise as well. "Alright, this feels just as heavy" She lowered the barbell slowly and steadily, as it was quiet the strain to, though the further she got, the more did her arms and chest bulk up and the easier it got. As the bar reached her chest, she pushed it up again with another grunt, though it seemed less of a strain now. Tom couldn't believe his eyes as he looked at her arms, the previously slim limbs already gained definition, fine lines appearing on it. "Hey, this isn't as hard as I thought" She lowered the weight again, this time with a lot less effort and as she pushed it up again, her arms and chest were bigger again, the outlines of her pecs appearing under her bust. She repeated the cycle a few times, each time her arms were thicker and her chest stood out more prominently. She racked the weight again and set up after only 10 reps. "This is too light, I barely feel any resistance. Could you get me some more weights, please?" Tom was captivated by his sisters gains, only snapping out of it as he's asked to do something. "S-sure!" He darted over to weights and...