He doesn't.

All slippery and clumsy, you reach out for the sponge you dropped and slip straight down to the ground after it, landing in a sprawl while cursing your power limitations. All things considered, you recover and get back up to your knees pretty quickly for somebody in your state. Out of the corner of your eyes, you can see your other cellmate keeping his distance. You must have hurt him enough for him to not even think about taking the risk.

Good call.

You finish your shower with a small confidence boost that you've secured yourself, for now, and return to your cell.

Most of your days play out the same way, to the point where your biggest issue is sheer boredom.