Be mindful of your fitness level: Be extra careful when you’re outside in the heat. You might have a lower tolerance to whichever exercises you are used to doing indoors.
Drink lots of water: Dehydration can cause many unwanted symptoms and illnesses. Be sure to drink plenty of fluids, even if you’re not thirsty. Energy drinks with electrolytes can also help prevent dehydration and of course, avoid alcohol or caffeine before any intense outdoor activity.
Dress to Sweat: Wearing tight fitted clothing can make you hotter, as opposed to loose fitted items that let the sweat evaporate more easily. Also, avoid dark colors as they absorb the heat instead of reflecting it the way lighter colors do.
Be wary of the sun: It is always much hotter midday when the sun is directly overhead. If you’re going to be exerting yourself, you probably want to do it in the morning or late afternoon so that you avoid the extreme heat.
Protect your skin: This seems obvious, but don’t forget to put on sunscreen. Sunburns increase your risk of skin cancer and make it harder for your body to cool itself.