Just thinking about how much we’d have to exercise to burn off a delicious meal can keep us from going overboard. According to the journal Appetite, people order 200 FEWER calories worth of food when they see the calories listed on a menu – PLUS how far they’d have to walk to burn them off. And you can use this tactic on yourself. Basically, every 100 calories equates to running one mile. So, if you’re tempted by a 200-calorie candy bar, ask yourself if it’s worth running 2 miles.