level of may also be more cooperative than others. It is the male hormone par excellence. gives muscles, assurance and fertility to the man. Secreted by the testicles (and in small amounts by the ovaries in women) as well as by the adrenal glands in both sexes, this hormone has other astonishing faculties that recent research has highlighted. First, contrary to popular belief, this hormone does not only increase the aggressive and antisocial behavior in humans. The work of French and American researchers indicates that it also promotes attitudes that help maintain or improve its social status.