Respiration

• During vigorous exercise, your body cells may not have enough oxygen for aerobic respiration to take place and anaerobic respiration occurs instead.
• The equation for anaerobic respiration is: glucose → lactic acid.
• Anaerobic respiration releases less energy than aerobic respiration but it does this more quickly.
• The product of anaerobic respiration is lactic acid, which builds up in muscles causing pain and tiredness, leading to cramp.
• After vigorous exercise, it's important to breathe deeply and quickly for a short period, a process called excess post-exercise oxygen consumption or oxygen debt.
• During oxygen debt, the lactic acid reacts with oxygen to form carbon dioxide and water, and releases the rest of the energy originally in the glucose.