Don't let the heat beat your heart. Heat and humidity stress the heart. Simple precautions to keep cool can ease the strain.
D001833:Body Temperature Regulation / Q000502:physiology*; D004326:Drinking; D015444:Exercise / Q000502:physiology; D006321:Heart / Q000502:physiology*; D018882:Heat Stress Disorders / Q000209:etiology / Q000503:physiopathology; D006358:Hot Temperature / Q000009:adverse effects*; D006801:Humans; D012039:Regional Blood Flow