If your kids are on a sports team, make sure they drink some water before, after and during the game. Drinking enough water keeps the joints lubricated and improves athletic performance. Don’t overdo it though. Some coaches tell the players not to drink sodas for at least 24 hours before a practice or game because soft drinks are dehydrating. If children perspire a lot or work out vigorously or for an extended time, they may need a sports drink or fruit juice mixed half and half with water to replace sodium and potassium.