The production of lactic acid anaerobically...
In order for the muscle fatigue to end the muscle cells must be provided with oxygen to 'burn' the lactic acid.
Fatigue
During muscle fatigue, affected muscle groups lose the ability to generate force and the individual will experience a sensation of weakness. Muscle fatigue is comprised of two types of fatigue: neural and metabolic.
The muscles do not have enough oxygen for aerobic respiration.
My guess is that laughing causes your ab muscles to contract (mostly the rectus abominus), and they can start hurting from muscle fatigue (similar if you do too many sit ups). Your breathing also gets messed up when you are laughing, so maybe they cramp up faster because of lack of oxygen too.
Muscle fatigue is the main factor that inhibits muscle contraction. Muscles need oxygen and energy to contract and muscle fatigue is the lack of oxygen in a muscle. The build up of lactic acid is a factor of muscle fatigue.
In order for the muscle fatigue to end the muscle cells must be provided with oxygen to 'burn' the lactic acid.
In order for the muscle fatigue to end the muscle cells must be provided with oxygen to 'burn' the lactic acid.
In order for the muscle fatigue to end the muscle cells must be provided with oxygen to 'burn' the lactic acid.
The process that causes muscle tiredness can be reversed because once the muscle starts getting the right products it needs it can start its normal process. This is why when the muscle gets more oxygen it stops cramping.
Muscle fatigue
Muscle fatigue
When there is not enough oxygen for cells to operate at maximum ability, they undergo anaerobic respiration, the major product of which is lactic acid. Lactic acid causes immense pain and a burning sensation - muscle fatigue - which is the body's defense against being worked to the point where the muscle cells are destroyed by the buildup of acid and permanent damage is done.
lack of oxygen
The fatigued muscles would need more glucose and oxygen.
Fatigue
Lactic acid is a by-product of fermentation. It was once believed that it causes muscle fatigue, but modern scientists are unsure if it reduces fatigue through increased intracellular calcium or increases fatigue through reduced sensitivity of contractile proteins to Ca2+.