Everyone will feel sore after the first exercise, especially when they wake up the next morning, they will feel weak and have sore muscles. These are normal phenomena, because people's physical function will be very low if they don't exercise for a long time. After this strenuous exercise, those muscles that can't move for a long time will exercise, and the muscles will secrete a lot of hormones, which will make their muscles very sore.

Because you can't exercise for a long time, your body will become very weak, which will make your body unable to bear some stimulation brought by strenuous exercise. But the human body can bear a lot of pressure, which will make us feel uncomfortable and sore after fitness. It is also possible that we will do some exercise for the first time, and we will overload our exercise without paying attention to the limits that our bodies can bear.

This kind of overload exercise will do great harm to our body, sometimes it will strain the muscles, and then the muscles will have tearing pain. Therefore, fitness must be done according to one's ability, otherwise it will have a great impact on the body, which will bring us a lot of inconvenience in future fitness and a lot of trouble in life. We must take reasonable exercise in fitness, otherwise it will be bad for our health.

Therefore, when exercising, you must not exercise excessively or do strenuous exercise after a long time, otherwise it will do more harm to your body.