Feel the Burn

Not only do high-intensity workouts burn more calories per session, they also trigger higher post-workout metabolism rates and fat afterburn. This means you'll continue to burn calories and fat for longer AFTER your workout too. How great is that? Having sung the praises of high-intensity sessions, I have to say it's also true that carb calories become fat calories after a while anyway, so when it comes down to it, a calorie is a calorie. Forget the notion of a fat-burning zone. There is only one moral of the story: Burn as many calories as possible whenever you work out.