Can't exercise all summer

I tore my shoulder rotator cuff on a machine at the gym and had surgery yesterday.  Really bummed that will only be able to walk for exercise.  Sling for month then couple months physical therapy. 

But on a good note, walking is deemed the best exercise. You work a lot of muscles just walking (legs, butt, stomach, and if you use the other arm you could swing it and get in some arm and shoulder muscle group) and and you could speed walk and really burn those extra calories!!! Because at the end of the day it is all about calories consumed versus calories burned.