Choose an appropriate area to practice or play. You should hold practice sessions or games at indoor facilities with air conditioning if at all possible. If an outdoor area is necessary for practicing or playing your team's sport, choose one that is in full to partial shade instead of direct sun to avoid overheating.
Dress the children appropriately. Choose clothing that is as loose-fitting and lightweight as possible for the specific sport the children are playing. Allow them to wear different clothing for practice sessions if the weather is especially hot.
Take frequent breaks. Schedule these breaks into the children's practice or game time, and be sure to follow the break schedule exactly. Set an alarm to remind you when each break time arrives, so that you do not inadvertently allow the children to play through a scheduled break. Allow practice or game play to stop if a player appears to be overheating or states that he needs a break.
Encourage the children to drink plenty of water while practicing or playing. The U.S. Occupational Safety and Health Administration (OSHA) recommends drinking at least 1 cup of water four times an hour. Allow the children to drink water as frequently as they feel they must.
Know the signs of heat stress or exhaustion. These signs include high body temperature without sweating, disorientation, dizziness, weakness and vomiting. Call 911 immediately if any of the children begin to have seizures or pass out, as these are signs of overheating to the point of heat stroke. Heat stroke is a life-threatening condition that requires immediate medical attention for the victim.