At the moment I'm really hitting the gym hard but I don't feel like I'm really pushing myself. I do 45 minutes non-stop running on the treadmill, 40 minutes on the treadmill, 15 minutes on the ergo and 100 sit-ups when I'm at the gym. I also use that thing where you move from side to side and it tones your stomach. And 50 sit-ups before bed. During the summer I go for runs for about 45 - 1hr. I was just wondering what other people did? I'd like to steal some ideas off you.