Ways to Stay Cool in HOT Weather
Stay Hydrated.
Water is essential for keeping you cool during hot weather. Water keeps your body cool and should be drunk even if you don't feel thirsty. It's okay to also drink commercial waters (such as Vitamin Water) or sports drinks such as Gatorade but they're usually not necessary unless you're deliberately replenishing lost vitamins/electrolytes following a sporting activity.
-Don't wait until you're thirsty to drink. Drink plenty of water before engaging in any activities. If you wait too late, you could experience cramps, which are a sign of heat-related illness.
-Freeze a bottle of water to

carry around with you. It'll be solid when you leave the house, but the heat will start melting it from the moment you take it out of the freezer. Wrap it in a towel to prevent water condensation affecting other items in your bag.
Choose cooling foods. Food can keep you cool provided you make the right choices. Choose salads, fresh raw food, vegetables and fruit. "Cool as a cucumber" is literal; it is nearly 100% water, providing hydration to keep you cool. Avoid eating meat and protein-heavy foods during the heat of the day because these can increase metabolic heat production, which can add to loss of water.
-Make food without using the oven or stove. Find foods that don't need to be cooked, or don't need to heat to be cooked. If you must actually cook, keep the cool air in, and the temperature down, by using the microwave instead of the stove or oven. -Make popsicles, slushies', frozen fruit, frozen yogurt, and other frozen treats to help you cool down.
Stay out of the sun while it's at its hottest.
This commonsense approach isn't always easy to adhere to when summer fun beckons, so it bears repeating. Avoid activities in the noonday sun as much as possible. It's best to limit your sun exposure between the hours of 10 a.m. and 4 p.m. each day during warmer months. When you are outside during these times, limit your exposure as best as you possibly can.
-Schedule activities early in the morning or later in the afternoon Some people are particularly vulnerable to heat and should stay in cool places during hot weather, such as children, the elderly and those who have health problems.
Wear sunscreen! While sunscreen doesn't necessarily have a cooling effect, its protective effect is vital during warmer weather. As well as being painful and damaging, sunburn can cause a fever and various signs of dehydration. If left unchecked, sunburns can lead to heat exhaustion or heat stroke.
-At the minimum, use SPF 15. If you're

planning on being outside for a while, SPF 30 would be a better option.
-Reapply often. Every two hours is recommended, but it should be reapplied more often if you're swimming or sweating a lot.
-Apply roughly a shot glass worth of sunscreen to cover the entire body.
Stay in the shade.
Retreat to shade as much as possible. Taking breaks under trees works doubly well because trees release water into the air that absorbs some of the heat. While shade doesn't lower the actual temperature, the lack of sunlight exposure makes it feel like the temperature is up to 15 degrees cooler. If a cool breeze comes by, that can feel like an additional lowering of 5 degrees in the shade.
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