Yeah man when I was in school using crutches I swear I went like 4 miles a day around my school. 4 weeks of doing that shit at a time really buffs your arms/chest up!

I myself have to wear a kneebrace for the rest of my life. I was an avid skateboarder before this shit. When I dont wear a kneebrace my knee gets stiff after walking for a bit. Shit sucks hardcore.