Your body is able to produce energy in two ways: aerobic and anaerobic metabolism. Aerobic metabolism is the energy system used 99 percent of the time. It’s how you produce energy when you are able to ...

Who knew that two simple letters--an--could make all the difference in triathlon training? Frequently referenced, but often misunderstood, the difference between the terms aerobic and anaerobic seems ...

During intense or prolonged exercise, muscles can feel like they’re burning the longer and harder someone pushes. This occurs because the muscles produce energy as quickly as possible by dipping into ...

Think about how you feel doing your 12-3-30 routine on the treadmill versus during a high-intensity interval (HIIT) class. You probably feel like you could maintain that first one for a pretty solid ...

If you're an endurance athlete, your lactate threshold can be an incredibly useful training tool – but what exactly is it, and how can you measure and use it? Lactate is created when muscle tissue ...

Your body is able to produce energy in two ways: aerobic and anaerobic metabolism. Aerobic metabolism is the energy system used 99 percent of the time. It’s how you produce energy when you are able to ...