Summer may not be officially here but it is plenty hot out on the tennis courts. And while that means more time playing tennis, it also means more chances of getting beaten down by the heat. Heat illness is a real danger when you're playing summer tennis. So in this episode, we'll talk about heat illness - what is it, how to avoid it, and what to do if you or one of your tennis pals is affected. I'll also give you my 10 best tips to beat the heat on the tennis court.