Dude, 80 hours a week of any residency sucks, and that's if you're lucky and your program complies. And of course it wears you out. Even those "lifting weights a couple of times per week or playing pick-up games" are very hard sometimes to do. Life, especially as an intern is much more tiring and exhausting than I ever imagined it would be, and my year is honestly not too terribly bad. I would definitely say that any residency is the same, especially 1st year. I have friends in every field all of whom have had little time to do a lot of extracurricular stuff and are all tired. I played in a mens' soccer league in med school, and now, if I were still at my home school I would try, but honestly would probably rather sleep in on Saturday morning if I had it off. Sorry to sound so jaded, but I am an intern.