Anaerobic Zone

The anaerobic zone refers to a level of exercise intensity where your body relies primarily on stored energy sources that do not require oxygen, such as glucose, to produce quick energy. This typically occurs during high-intensity efforts like sprinting or heavy lifting. Because oxygen isn’t the main fuel, your muscles generate energy rapidly but also produce waste products like lactic acid, which can lead to fatigue if sustained too long. Training in the anaerobic zone improves muscle strength and power, helping your body perform better during intense activities.