Why are men larger than women? Studies were done on primates. A male gorilla is much larger than the female. His testicles are tiny. He beats the computation off. He is monogamous and a polygamist.
Male and female chimps are about the same size. Females mate with everyone. Their testicles are large. Mlae chimps attempt to flood out the competition. Humans are somewhere in between. The males have mid sized testicles and are little large than females. We are mostly monogamous. Frank Z