Manly men. Guy's guy. Nowadays, gender roles are more fluid than they've been in recent decades, redefining masculinity. Men are taking on more of the child care and household chores and worrying about finding a work/life balance. Men (the younger ones, that is), are even starting to embrace traditionally women's grooming products and fashions. So the next time you can't find your Spanx, ladies, you might check your boyfriend's underwear drawer.

Infographic: Carlos Monteiro