Mary crawled over to the case and lifted her head enough to read the various labels of the vials. She read through many of them until she finally found what she was looking for: Muscle. She made extra sure to pick the Muscle + vial and not Muscle -, she really didn't want to be completely immobile with these gigantic curves. She opened the vial and gulped the strong tasting, somewhat spicy liquid.
Almost immediately, she felt a burn in her entire body and... then it stopped. She looked at her arms, but they didn't look any more muscular than before. Sure, she never was fit by any means, but growing this little insulted her a bit. She quickly refilled the vial and gulped the second dose. This time, the burning sensation was stronger and so her muscles grew. Her arms looked slighty defined, but not much more.
Still, she felt the heavy weight of her sexy curves, so she continued. Vial number three had her looking like an average fitness model you'd see on social media. After the fourth one, she had enough mass to put some men to shame. She thought about whether or not to stop right there, but her curves were still noticable.
So she downed her fifth one and watched her muscle explode in size. With every consecutive vial her mass increased more and more drastically. She inspected her melon-sized arms and pushed her firm breast aside to gaze at incredibly defined 8 block of power and titanic legs. Even her ass got sexier and a lot harder underneath the soft layer of fat.
By that point, she couldn't feel her curves one bit. She felt the same way before any of the changes happened. Out of interest, she walked over to the kitchen and got a hold of the fridge. Surprisingly easy she lifted the big fridge off the ground and held in front og her with extended arms. At first both, then only one arm. Still it felt easy. She knew her muscles were very big now, but she must be a whole lot stronger than she looks. She flexed her massive biceps and was greeted by a sound which indicated pure power. It reminded her of leather being stretched. Now she was sure that all this muscle mass had to be incredibly dense, thus making her impossibly strong.
But now she thought about what to do next. What to do with all these muscles when they're not being used properly? She decided to grab the vial with the label saying...