Well physically I'm not really limited per-say. The main issues are space, price, and comfort.

Ex. I can ride a bike fine, but my other health problems makes it uncomfortable. The bouncing of the bike will cause me pain. I can switch to a stationary bike. But that would be too boring for me. That's way I'm working on buying a tadpole recumbent bicycle.

If I get exercise equipment, it needs to be compact. It can't be a pile of metal that sits in the corner. I would need it to be able fold away under a bed or in a closet.

The price is a biggest issue. I'm not M$, so I don't have $$$$ to spend on the biggest and best equipment, plans, and what not.