From the "ladies" side: from 13 to 19 nobody could have been more "macho" than moi; motocross races, full contact karate, track and field, free hand rock climbing, whitewater inner tubing (class IV), several girlfriends at the same time, going commando, etc....and all for nothing, at the end it went down to the proverbial: "To Be or Not To Be." What I learned from the experience was that my gender identity is not tie to any specific behavior, voice inflexible, anatomical characteristic, or dress code, but it is rather an innate indefinable self perception of just being female.
The funny thing is that as female as I am, I still like and practice some of those "hobbies," they are what they are hobbies that demand endurance and mental discipline, which are not exclusive to a given gender.