The following are some of the reasons why 8 year olds sweat a lot: 1. Physiological sweating, children are growing vigorously and active, with a lot of activity, so they naturally sweat a lot. If the child eats, drinks, sleeps and is in good spirits, parents need not worry too much. 2. Internal heat and sweating caused by food accumulation, if the child consumes too much high-fat, high-protein food, it will easily cause food accumulation, which will lead to internal heat, thus consuming Yin and causing sweating. It is recommended that parents give their children more vegetables and fruits, drink more water, and eat less greasy and fried food. 3, Qi deficiency sweating, children will sweat a lot when they are slightly active, and even stay inactive will sweat, often manifested as poor appetite, yellow face, easy fatigue, and often cold. It is recommended that children should go outdoors more often to promote digestion and appetite, as well as to enhance physical fitness.