Like the above poster, I work with people who likely wouldn't be sick if they made better lifestyle choices.... but I try not to eat junk food in bed. I don't like being a do as I say not as I do kind of person, so I try to model healthy behaviors to my pt's.
I put together a pretty extensive gym in my garage (squat rack, barbells, dumbells, GHD, rowing machine), but I DON'T get 30 minutes of exercise during my work day. I'm usually comatose after work my days on, but my days off I try to work out every other day.
A coworker got me out to a rock climbing gym last night, was a pretty great full body workout and I'd be lying if I said my forearms and hands weren't killing me from gripping on to little plastic stones and something different then squats and deadlifts -- a lot of fun.