What is the fastest method of body heat loss?

In high temperatures there are several methods of body heat loss. One is metabolic heat loss, which is where the metabolism of the body produces heat which is increased in higher temperatures, this in turn produces heat loss. There is heat exchange which is where body heat is lost when making contact with a cooler object. Also conductive heat exchange allows the body to lose heat as coming cool, like water or air, move around the person. The body also uses radiant heat exchange which is where the blood is sent to the superficial arteries and veins to let off heat. Finally there is evaporative heat loss which is of course when a person sweats and as that sweat evaporates it takes body heat with it, thus in turn cooling the body down.