A cramp is a sudden, involuntary, painful skeletal muscle contraction that causes significant pain and a paralysis-like immobility of the affected muscle. Cramps often occur for a few seconds to a few minutes, and the pain will decrease gradually and disappear completely. Cramps may occur during or after a physical movement, or even during sleep. All can suffer from cramps, especially those over 60 years old, and pregnant women. According to Suc khoe & Doi song news site, there are some causes for cramps: Shortage of minerals: The lack of minerals such as sodium, calcium, magnesium or potassium may give rise to cramps. The lack of sodium causes dehydration for the body, and cramps. Meanwhile, the shortage of calcium and magnesium affects the functioning of the nervous tissues and muscles, which may cause cramps. And the lack of potassium affects the functioning of muscles, thus causes cramps. Dehydration: The loss of water due to long physical activities in hot weather, when the body sweats and is not supplied enough water or electrolyte drinks. Dehydration may also come from high fever, vomitting, or diarrhea, which may cause cramps. Pregnancy: Changes in hormone, weight, and high demand for nutrition in pregnant women, […]