I've seen one person come close to a heat-related injury already this year. Why?
a) very much overweight & older (pushing 60 I'd guess)
b) admitted to being hungover
c) drank only coffee to start the day that day
d) brought one 16.9oz bottle of water
Folks, don't be that guy! It's crazy! Personally I don't drink often, and not at all if I am diving the next day! People don't realize how much drinking dehydrates the body.
My personal tips:
1) As we have already seen in this thread, bring water to pour in your wetsuit! If I am on a boat, I will suit up, jump in & flood my wetsuit, then get back on the boat to gear up.
2) Wear a UV blocking rashguard & use sunscreen. Sunburn is for suckers. Don't be a sucker.
3) Drink water, not soda/pop/coke/whateveryoucallitwhereyoulive. Drinking a Pepsi between dives is not helping you.
4) Stay in the shade if possible.
5) Tip your DM if he has to pull your big hungover ass out of the water because you are too jacked up to help yourself. Surely your life is worth a few bucks.