I'm from America but I have advice for you guys getting stuck in the heatwave over there. I know most people dont have air conditioning but I read you can make an "air conditioner" by putting a cup full of ice and salt behind a fan. Also if you start overheating hold a cold compress of some type on the inside of your wrists, inside of the elbows, the back of your knees, or on your neck. That's where some big arteries are so it will help cool down your over all body temperature faster. Stay safe!