The nutritional value of your fruits and veggies depends on how they've been handled — from the field to the fridge.     

Knowing how your body absorbs nutrients can help you fuel your workouts – and your life.

If you want to take off — and keep off — unwanted pounds, a healthy metabolism is your body's best fat-burning friend. Find out which habits can make or break your body's ability to produce energy from would-be pudge.