Follow this with one cup of water about 15 minutes before the event. The body cannot absorb more than about one cup every 20 minutes. Weigh before and after a sporting event or heavy workout. After the event replace two cups water for every one pound lost. Water balance in children involved in sports or physical activities is a special concern.
Children have lower sweating capacity and less tolerance for hot temperatures.
They need frequent fluid intake in order to regulate body temperatures. A water bottle or ready water supply should be handy during all sports activities. Parents, coaches and others should remember that younger children also take longer than adults to adjust to warm weather following cool winter temperatures. It is especially important to watch fluid intakes during the adjustment time. The combination of hot, humid temperature and physical activity places outdoor workers at special risk for water balance.