What's a Gal to Do?

Okay, still completely hypothetically speaking, let's imagine that someone who exercises in some form or fashion 5-7 days a week gets injured. Injured bad. Let's just say this someone needs that exercise for brain-clearing purposes more than anything else. Now that it's been 4 days since any exercise -- other than using crutches to get into Target -- the acid of grouchiness is piling up in her brain. I think she should start with a bubble bath, then maybe a jog in the gym's pool. If that doesn't work she may have to hit the hard stuff -- Blue Bell. Anyone have any better ideas?