1, two situations that are prone to muscle soreness: the most common situation occurs in people who lack exercise. After taking part in an exercise once in a while, these people will have general malaise and muscle aches. Another situation, that is, people who often go to the gym to exercise, will also happen. As the load and intensity of strength exercises gradually increase, muscle soreness will occur in the delayed period. This kind of muscle soreness is also the feeling pursued by many bodybuilders. Generally speaking, muscle soreness is a sign that the corresponding muscles are in place to some extent.
2, one of the reasons for muscle soreness: lactic acid accumulation. Lactic acid accumulation generally occurs in people who lack exercise, or the muscle parts lacking exercise suddenly move to a certain intensity. With the increase of fitness exercise frequency, the phenomenon of lactic acid accumulation after exercise will become less and less, and the degree will become lighter and lighter. So we should keep the good habit of exercising.
3. The second cause of muscle soreness: muscle fiber connective tissue damage. Another major cause of muscle soreness is slight damage to muscle fibers. When we gradually increase muscle exercise load, it will cause slight damage to local muscle fibers and connective tissue, and even cause spasm of some muscle fibers. In fact, this kind of muscle fiber injury and spasm is local and microscopic, and the muscle can still complete the motor function, but there is a feeling of pain. After soreness, muscle tissue becomes stronger than before after local minor injuries are repaired, and the same load will not cause injuries and soreness in the future.
References:
Sports nutrition, edited by Xiaomi Nutrition Research Institute.