I guess you just started exercising. You didn't sweat much at first, and the water flowed all over your body. Later, you got used to the intensity of exercise, and your body naturally sweated. Of course, this is also related to your physical fitness. Some people have developed sweat glands, and they will sweat a lot when they move. Some people are weak, and insufficient blood gas can also cause sweating problems. In short, there are many reasons for sweating, but as long as there are no other uncomfortable symptoms, the problem is not big. Pay attention to drink plenty of water and replenish water in the body.