Physical cooling is to use cold water warm water: usually use the method of warm water around 32-34 ℃ for physical cooling, rather than using hot water. Because the temperature of cold water is lower and has playfulness, it can absorb and take away a lot of heat, so that the body temperature drops and the symptoms can be relieved. Cold water can be wet with a wet towel put cold water wet compress, you can also use ice for physical cooling, put ice or a small towel of cold water on the body’s neck, armpits, chest, limbs, hands and feet heart and other places to give physical cooling. Physical cooling is a good way to lower body temperature because it is simple, and effective, safe and convenient.