When in doubt, take the blow. It's the chivalrous thing to do. It can get doggone cold at night, and the Sheriffs and Chirurgeons will be notably unsympathetic. The categories may overlap . Heat Stroke can be fatal.
AID Get out of the sun, and out of the heat if possible.
This means water, fruit juice, Gatorade, decaffeinated soda, etc. Try to avoid alcohol and caffeine, which tend to dehydrate the body. Be moderate in your consumption of alcohol, and drink at least an equal amount of non-alcoholic fluids. Use care in food storage and preparation. Food kept in tents can spoil quickly.