testosterone

August 30, 2023

Huge study finds men's testosterone drops after age 70

July 28, 2022

Dogs have masters, cats have servants, so why do domestic cats tolerate each other?

August 12, 2018

A man's hormones tell him he’s better

May 24, 2016

Transgender runners at no advantage

February 22, 2012

Attracted to men with healthy faces