Poor resistance, first, less exercise. Second, parents do not pay enough attention to it. Parents usually pay attention to prevention, and children generally don't get sick.

For example, children who eat too much will be spanked by their parents every few days.

For example, drink water every day to prevent getting angry.

Touch your child's hands and feet before going to bed every day. If the palms and soles of the feet are too dry, the child will soon get sick. Drink water quickly.