when is anaerobic respiration used
Anaerobic respiration occurs during high-intensity exercises when your body works so hard there is a shortage of oxygen for energy consumption. Due to the shortage of oxygen, your body breaks down glucose and phosphates stored in your muscles for energy. The byproduct is lactic acid, which causes muscle fatigue. Due to lactic acid buildup, your muscles can only sustain anaerobic respiration for short periods of time.