*Hugs.* I'm glad you're doing better, though I'm sorry to hear it. Definitely keep yourself hydrated; cold water is the best thing for you on a hot day.  Also, if you need to keep your temperature down, put a damp, cold cloth (with or without ice) on the back of your neck; it chills the blood as it enters your head, and helps keep your brain from overheating (seriously).<br/><br/>One thing with hydration, though, is make sure you get some salt, too. The human body is about 70% water;<em> salt</em>water, specifically. Proper salination is important.