Gender had been thought to play a role in how much a person sweats. In a recent study, S. R. Notley and his colleagues (School of Medicine, University of Wollongong, Australia) found that sweating is related to the overall shape and size of a person's body.
People with larger bodies, whether they are taller or heavier, sweat more than those with smaller bodies.
There are two major ways the body uses to cool off: (i) sweating, which cools the body when the sweat evaporates from the skin, and (ii) increasing the amount of blood flow to the skin.
The researchers in the study found that smaller people are more dependent on blood flow to cool down their body. Put differently, smaller people sweat less.
Source: S.R. Notley (March 2017). Experimental Physiology