Most Helpful Girl
Make up. Guys think if they wear it, it has to be all lipstick and eyeliner but things like foundation and concealer, when applied correctly, are meant to mimic a natural flawless skin tone. Just about every other thing men do to themselves that is not considered natural to the body, aka, wearing cologne, shaving, lifting weights... women do that too so it isn't really male or female specific and neither is make-up either. Perhaps the way it's applied and what's used sure, but that's about it.
Most Helpful Guy
Surprised no one has said lifting weights, protein supplements etc. Completely different to applying makeup of course but similar in that many guys (whether we admit it or not and myself included) do it at least partly in the hope of improving physical appearance.
Not that lifting is an exclusively male activity; more power to the girls who lift too.