1, the warm-up activity is not done enough, and the muscles suddenly change from a static state to a moving state, and they can't adapt for a while, resulting in contracture, that is, cramp; .
2. The ambient temperature suddenly changes, and the muscles "tremble" due to the cold, causing cramps.
3. Long-term exercise causes muscle fatigue, continuous exercise without rest, and muscle accumulates metabolites (such as lactic acid). ), and functional changes lead to cramps.
4, strenuous exercise, sweating a lot, too much water and salt loss, and insufficient chloride (mainly salt) in the body can also cause cramps.
5. The intensity of exercise load suddenly increases, or the exercise mode suddenly changes, causing the muscles to contract sharply.
6. Exercise in an inappropriate posture or poor muscle coordination.
7. Poor local circulation.
8. Slight tearing of muscles or tendons.
9. Emotional stress.
10, diarrhea and vomiting are serious, and minerals (such as magnesium and calcium) in the diet are insufficient.
Extended data:
Matters needing attention
1, chromium should be supplemented in time during training.
Chromium is an essential mineral to sustain life. It can reduce cholesterol in human body, increase endurance, make muscles grow, oxidize and lose fat.
High-quality grapes and raisins have the reputation of natural "chromium bank". Ordinary men can provide enough chromium by eating a bunch of grapes every day, and men who participate in fitness exercises need to double it.
2. Poor sexual desire and excessive zinc loss after exercise.
Zinc is called the "sex element" of men. Zinc deficiency in the body will affect the number and activity of sperm. For men who take part in fitness exercises, more zinc will be lost, especially when they sweat a lot, so zinc supplementation is particularly important for men who exercise regularly.
Eating lean meat and steak is an effective way to absorb zinc. According to the determination, every100g lean beef can provide about 50% of the daily zinc requirement. Seafood, mushrooms, lean meat, eggs and coarse grains are also rich in zinc.
People's Network-Why is it easy to cramp when exercising? Calcium should be supplemented in time.