[igouy]

fwiw "We suggest that increases in eccrine function are not dependent upon increased physical activity or reduced body hair. Therefore, enhanced sweating capacity may have evolved in Australopithecus or even earlier hominins, driven largely by climate. The additional increase in modern human sweating capacity evolved later, concurrent with long distance walking and running." page 40

"The evolution of eccrine sweat glands in human and nonhuman primates"

https://www.researchgate.net/profile/Andrew_Best4/publicatio...