There are two kinds of muscle soreness, one is muscle soreness that occurs immediately during or after exercise, which is caused by lactic acid accumulation, because the lactic acid content reaches its peak at this time; The other is muscle soreness on the second or third day of exercise, mostly caused by muscle injury; It is not surprising that occasional muscle fiber injury leads to muscle soreness, because the process of muscle growth is the process of excessive recovery after muscle fibers are destroyed, but long-term or severe muscle soreness is the embodiment of overtraining, which will cause great harm to the body. \x0d\ The methods to prevent muscle soreness are: \x0d\ 1. Do muscle stretching before and after fitness, mainly static stretching. \x0d\2。 We must follow the principle of gradual progress. Whether it is weight or training intensity, muscle soreness will still occur for beginners without weight, not to mention weight. No matter how much weight you can lift, you should start from zero strength and gradually increase it. \x0d\3。 Protein and carbohydrates are supplemented for muscle repair after exercise. \x0d\\x0d\ Once muscle strain occurs during fitness, you can use cold compress and hot compress to relieve the pain. Cold compress 1 ~ 2 days can completely relieve the pain, followed by hot compress 1 ~ 2 days, during which you can do some simple activities, such as walking and stretching. I wish you early success. If it is useful to you, please choose a satisfactory answer, give an approval and encourage you. thank you