Exercising with a broken hand

Beckilovespizza

Hi, I managed to break a couple of bones in my hand whilst roller skating and am now finding my lack of gym workouts frustrating. Has anyone got any good ideas of workouts for a silly girl with a broken hand? I cant drive so am walking at a quick pace to work and back for a total 80-90 mins daily, it just doesn't seem enough for me. Any suggestions are greatly received. Many thanks in advance!!