Heat can be dangerous for anyone...and deadly. Jorge Martinez, CEO of the American Red Cross of Western Pennsylvania, says that with heat cramps and heat exhaustion, you should stop what you're doing, rest in a cool place, and slowly sip water. But a heat stroke? Much more serious. He says if you're experiencing symptoms, you should call 911. To avoid a serious illnesses in the first place,, he advises to stay hydrated, stay cool and stay connected to others.