The muscles do not have enough oxygen for aerobic respiration.
The muscles do not have enough oxygen for aerobic respiration.
lactate
The muscles do not have enough oxygen for aerobic respiration.
The muscles do not have enough oxygen for aerobic respiration.
The muscles do not have enough oxygen for aerobic respiration.
The muscles do not have enough oxygen for aerobic respiration.
Muscular cramp occurs when the oxygen demand by muscles is greater than what the body can provide. When the supply is less than the demand, the muscles start to undergo anaerobic respiration - this results in a build-up of lactate in the muscles. When the levels of lactate become too high, the muscles cramp.
Lactic Acid
The burning sensation in the muscles after strenuous exercise is caused by lactic acid. It is an acid that is formed when the body breaks down carbohydrates to use for energy when the normal energy stores have been used up. Muscles are building up lactate from anaerobic respiration. (apex!)
Canary Islands
Lactic acid builds up and that's why it starts to burn.