1, one of the high-risk groups: people who don't exercise for a long time: some people don't exercise for a long time, but they think it's meaningless for me to come to the gym and don't increase the amount of exercise. Actually, this is not right. Doing so is likely to do harm to your health, so you should do what you can.

2. The second high-risk group: people who sit in the office for a long time: people who sit in the office for a long time have stiff muscles, neck, waist and knee joints are prone to muscle strain, and some have the problem of meridian adhesion. In addition, the joint strength of this kind of people is generally poor, so it is not recommended to do strong strength exercises at the beginning, and a large amount of exercise will only make matters worse.

3. The third high-risk group: people who drive for a long time: Now there are more and more car owners. People who drive for a long time will have stiff knees and ankles. If they don't do enough stretching exercises, they may strain or cramp. For example, a member is a driver. Because of driving for a long time, one leg muscle atrophy, so some sports are not suitable for him.

4, the fourth high-risk group: people with joint inflammation: such as arthritis, even if they have recovered, they should pay special attention to exercise in winter, and some high-intensity exercise is not suitable.

5. The fifth high-risk group: people with joint injuries: a member had a car accident, resulting in joint injuries. After getting better, he thought it was all right, and as a result, he felt uncomfortable when he was exercising. If you have had joint injuries, you must tell the coach, because some stretching exercises can't be done.