Magnum's After Burner is the most effective nighttime fat burner available. Long after your day is over and you are asleep in bed, After Burner allows you to continue using fat as energy by: Increasing Fat Loss While You Sleep Decreasing Fat Storage Reducing Food Cravings And hunger Increasing Thermogenesis Without Stimulants   After Burner achieves this in a multitude of ways, but a critical factor is the activation of your brown adipose tissue. Brown adipose tissue is one of the two types of adipose tissue in the human body. (The other type - called white adipose tissue - is the fat you find on your stomach, love handles and bum). Brown adipose tissue contains a significantly higher concentration of mitochondria than white adipose tissue; its primary function is to generate heat, which it does by burning white adipose tissue. When you activate your brown adipose tissue while you sleep, your fat actually burns fat!