Quest Vitamins LTD,
Cramp is a common and Painful condition, which is caused by the prolonged contraction of a muscle. Cramps normally only last for a few seconds and can be put down to such things as poor posture, Stress or tiredness. Sometimes the feeling of cramp will occur just after exercise because there is a build up of certain chemicals in the muscles.
Many people suffer from night cramps, which can only be alleviated by massage or stretching. There is no known cause for these, however the feeling may be due to the narrowing of blood vessels.