Not So Fasted
Doing fasted cardio could burn more muscle than fat. Many folks think that doing cardio on an empty stomach will help them lose more fat.
Food provides fuel for energy, so if there is nothing available in the stomach, it makes sense that your body would tap into stored energy – mainly fat – to power exercise. Studies have shown that faster cardio did not burn fat more effectively than cardio performed after a meal. And since workout intensity directly affects how many calories you burn, not eating before long and intense session could reduce the energy you have to train with and lead to a subpar workout.
The truth is, performing on an empty stomach causes you to break down fat faster than your body can use it for energy, which results – sadly – in the fat being shuttled back into your fat cells.
The bottom line: Do fasted cardio if it makes you feel better – many don’t like to eat and then workout with food still sloshing around in their gut. But don’t think not eating is going to speed up the time until you see your abs. eating less overall (i.e., adjusting your diet) is the best strategy.