USSF Guidelines for Heat Illness (G.O.A.L.)
G - Get acclimated - Active kids (and adults) bodies need time to gradually adapt to increased exposure to high temperature and humidity. It takes the body on an average eight to ten days to acclimate to changes in temperature. During this time it is especially important for kids to drink plenty of fluids.
O - On a schedule - Thirst isn't an accurate indicator of fluid needs. Young athletes should be encouraged to drink on a schedule or at regular intervals BEFORE they become thirsty. They should consume 5 - 9 ounces of fluid every 20 minutes (a child who weighs less than 90 lbs. needs 5 ounces of lfuid and a child who weighs more than 90 lbs. needs 9 ounces of fluid).
A - Always have children bring water and always bring extra.
L - Learn the warning signs of dehydration and heat illness - if someone becomes fatigued, dizzy, nauseous or complains of a headache during exercise in the heat, have them stop, rest, and drink fluids. Call 9-1-1 if symptoms persist or if a child refuses to drink fluids, vomits, or loses consciousness.