Don't forget rugby! It may not be the national sport, but we have all the hard hits... and no padding or armour whatsoever! And it's not just the regular season games... try playing a snow sevens tournament in February hitting the rock-hard frozen mud over and over again... now that's a sport! (It also worked out well for me since I have lousy depth perception -- I can tackle someone and let a fast runner pick up the ball and go with it).
And um, yes.. that was girls' rugby. Guys' rugby is even more insane, just because they're naturally faster/stronger - although perhaps not as naturally vicious
.