The heat doesn't bother me but I know plenty of tips on taking care of oneself during hot temperatures.
Wear light weight breathable clothes. Drink lots of liquids. If you have one, put an ice pack on the top of your head or on the back of your neck to help keep your temperature down.
Making sure the air conditioning continues to work. Barring that? Fans, plenty of fans and ice water, and ice cream.
But if you must be outside, taking advantage of water sources is key, both for drinking (if clean enough) and swimming in. I know it's all a bit basic, but it hasn't not worked for me yet.
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