The concept of packing in carbs before exercising has been questioned recently. Indeed consuming carbs before doing a workout session can increase your performance in certain arenas which uses more powerful movements such as sprinting and sports activities; however, it actually prevents your body from using stored body fat for energy. In fact, this will simply result in your body not getting the advantages of burning those fats. Exercising on an empty stomach or “fasted” is the latest weight loss secret that can help you trim down.
One study showed that doing one round of aerobic workout in the fasted state can help increase the reliance on fat and at the same time successively decrease your body’s reliance on carbs as fuel when doing workouts. Read more about it HERE.