I "exercise" every day, but I don't go to the gym. I just do push-ups, sit-ups and I have some manuals I use. So I don't use any machines or anything. And then there's the little things, like walking everywhere, taking the stairs instead of the elevator, putting all your books in your bag even though you don't need 'em, and shopping groceries at a store further away. Carrying groceries is hard work. I probably should start jogging, or joining the gym but I'm really not that motivated.