I got a chance to speak with K.A. Fetters again recently, but this time in U.S. News & World Report. This is one of my favorite topics to speak about! Here’s a short excerpt:
“Why would exercising first thing in the morning help you burn more fat? Because the body’s preferred, most fast-acting energy source is carbohydrates, found in the blood as glucose and stored in the liver and muscles as glycogen, explains Hayden Steele, an Oklahoma City-based personal trainer, and certified strength and conditioning specialist. Here’s how the theory works: In the morning, when your glucose and glycogen levels are depleted, your body is forced to instead use your body fat to power your workout.”
The entire interview can be found here.