When doing cardio, take a break. Scientists found that men who took a 20-minute break in between long cardio sessions of 30 minutes apiece burned more fat than those who did cardio for 60 minutes straight. Even if you're not training THAT long, it helps to take a break and a breath to deliver much-needed oxygen to your body. Can't squeeze a 30-minute workout into your schedule? Try three 10-minute sessions, broken up throughout the day, whenever you like. It's as easy as parking far away from your destination - five minutes of walking to and from your car knocks out one 10-minute session. Exercise - it's easier than you think.