What can keep you hydrated when it's hot as hell?
The best thing for hydration is plain water. If you are really sweating a lot drinks like propel and Gatorade can help too but make sure you drink reg water too. Avoid anything with caffeine or lots of sugar
You know there is this liquid called WATER! It's really refreshing! :P
Plain water with a bit table salt. Stay away from the sun and drink blood if you're a vampire.
Water with ice