Everything We Think We Know About Testosterone Is Pretty Much Wrong

Including — though far from limited to — its role in sex, sports and masculinity itself

Why Guys Are Convinced They Have a ‘Time of the Month’ Too

Can a dude's hormone cycle really become synced with his partner's?

All the Things That Might Cause Men to Grow Breasts

Bad news: Weed is on the list

Bro, You Have Estrogen Too, Bro

No estrogen, no boners