What causes cramps?

Cramp may be caused by muscle fatigue, insufficient water, cold stimulation, improper posture, electrolyte imbalance, etc. 1. Muscle fatigue Long or high-intensity physical activity can lead to muscle fatigue, which in turn causes cramps. When muscle fatigue occurs, the coordination of contraction and relaxation will be affected, and involuntary cramps will easily occur. 2. Dehydration is one of the common causes of cramps. When the body is dehydrated, the blood becomes concentrated and the electrolyte concentration is relatively high, affecting the normal contraction and relaxation process of muscles. 3. Cold stimulation In cold environments, muscles will contract unconsciously in order to maintain body temperature. If the muscles are already in a state of tension or fatigue, it is easy to cause cramps. 4. Improper posture Maintaining the same posture for a long time, such as sedentary, standing for a long time or sleeping incorrectly, will make certain muscles tense for a long time, increasing the risk of cramps.5. Electrolyte imbalance Electrolytes such as potassium, sodium, calcium, magnesium, etc. play a key role in maintaining normal muscle function. When the body electrolyte imbalance, especially calcium and magnesium deficiency, will directly affect muscle excitability, increase the risk of cramps.