The two large animals we have mainly used for transport perspire profusely compared to other quadrupeds: in one hour, a horse can lose about 100 grams of water per square meter of skin, and a camel can lose up to 250 g/m2. However, a human being can easily shed 500 g/m2, enough to remove between 550 and 600 watts’ worth of heat. Peak hourly sweating rates can surpass 2 kilograms per square meter, and the highest reported short-term sweating rate is twice that high.
