The USSF has put together some recommendations for how to stay hydrated in the heat – USSF Hydration Recommendations

To help make the recommendations easy to remember, the U.S. Soccer Federation has developed the acronym G.O.A.L., which stands for:

• Get acclimated – bodies need time to gradually adapt to increased exposure to high temperatures and humidity (especially young athletes).
• On schedule drinking– Youth athletes should be encouraged to drink on a schedule before they become thirsty, and should drink before, during and after practice and games.
• Always bring a sports drink– replacing electrolytes and providing energy is crucial to keeping kids safe and performing at their best.
• Learn the signs – if someone becomes unusually fatigued, dizzy, and nauseous or has a headache during exercise in the heat, have them stop, rest and drink fluids.

Hat tip to On The Pitch