This is the age old question, whether to work out on an empty stomach or not. When you wake up your glycogen stores are low, glycogen is your body’s preferred nutrient source so when depleted may cause your body to use more of your fat stores to fuel your workout then if not. Eating less frequently can improve your insulin sensitivity which can keep you in fat burning mode. Fasting can also increase your growth hormone (GH) which increases muscle mass and decreases body fat, 24 hours of fasting can increase your growth hormone level for males 20x the normal level and women’s by 13x. By then exercising this boosts your testosterone production which, in conjunction with your increased GH levels, can really result in improved body composition.