<unk>  (AMS) is the pain felt in<unk> s during and immediately, up to 24 hours, after strenuous physical exercise. The pain appears within a minute of contracting the<unk>  and it will disappear within two or three minutes or up to several hours after relaxing it. The following causes have been proposed for<unk> : * Accumulation of chemical end products of exercise in<unk>  cells such as lactic acid and H+<unk>  fatigue (the<unk>  tires and cannot contract any more) There are no modern effective treatments for AMS.
Acute muscle soreness
Exercise-associated muscle cramps
Delayed onset muscle soreness
Acute visual loss
Chronic pain
Post-exertional malaise
Intractable pain
Brief resolved unexplained event