An action you could take would to improve the health of a school is buy water bottles for the sports teams at school, by doing this you will hydrate the teams preventing them from going to the hospital for dehydration.
I an gonna say WATER. Hope this helps! Sorry if it doesn't! :)
A sample response:
it is important to drink water before, during, and after exercise in order to keep the body from dehydrating, especially in hot weather. one should also avoid drinking large amounts of water at one time as well as sugary sports drinks.