The Detroit News. Children that age have limited verbal and social skills. Tell me what you want.
Children can fall apart when fatigued.
Even adults have a hard time when tired. A child might whine or burst into tears for no apparent reason, or not notice someone is nearby and accidentally step on a hand or bump into him. When adults are anxious, exercise is often recommended to reduce stress and tension. That's because anxiety needs an outlet. One solution is to help children get vigorous exercise regularly.