1. Weakness and fatigue

Excessive exercise, especially anaerobic exercise, leads to continuous contraction of muscles in a short time, producing a large number of metabolic wastes in the body. The state of muscle tension at night has not been improved, and the excessive accumulation of acid metabolites has not been cleaned up in time, which will stimulate calf cramps. The poor muscle strength of the elderly and the decline of body metabolic function are also one of the reasons.

2. Cold stimulation

Cold is the most common direct cause of cramps, which can directly stimulate the strong contraction of leg muscles and sudden vasospasm.

3. Hypocalcemia

Calcium ion plays an important role in muscle contraction. Because the calcium absorption capacity of the elderly is weakened, the calcium loss is obvious, and children and pregnant women have too much calcium intake. When the concentration of calcium ion in blood is too low, muscles are prone to excitement and spasm.

4. Vascular factors

It is often the internal cause of cramps. When atherosclerosis or thrombosis occurs in arteries, blood circulation is blocked, local tissues are ischemic and anoxic, and physiological functions are disordered, which will cause chills, numbness and intermittent claudication of lower limbs, that is, numbness, pain and even spasm of calf muscles appear when walking, disappear after rest, and reappear when walking again; In severe cases, persistent pain may occur, and the pulse of lower limb arteries, especially dorsal foot arteries, is weakened or disappeared. Metabolites can not be taken away in time, and when they reach a certain concentration, they will stimulate muscle contraction and cause painful cramps.

colliquative sweat

Long exercise time, large amount of anaerobic exercise, excessive sweating, large loss of fluids and electrolytes in the body, such as low calcium, low potassium and low magnesium, large accumulation of metabolic wastes, and disorder of internal environment are prone to convulsions.

6. Local oppression

For example, if you lie on your back for a long time, the quilt will press on the foot surface, or if you lie prone for a long time, the foot surface will press on the bed, forcing some muscles of the calf to be in a state of compression for a long time, resulting in "passive contracture" of the muscles and insufficient blood supply. I wish you all the best, health, happiness and happiness. Please adopt it. Thank you.