This prompt seemed like fun; it was hard to choose one. Honestly, a month isn't long and assuming after a month we go back to our own body; I think the physically fit wouldn't matter.

I'd probably go for someone healthy and has a lot of $$$. I'd go spending it, donating it to charity and then transferring it to myself in cash so when I go back to being myself I'd be loaded

I agree with you though. I wouldn't want to be somebody else but if it's for a month why not have some fun :D