Sweet facegrind, bro.

This is the face of a man who knows that getting smashed in the face saved his life. Luge is deadly. Body flying at 50-plus mph leaves the track, it's going to mean a sudden stop that a helmet can't defend your brain from.

Combat sports may be the ultimate individual style of competition, where another human gets to attack you violently and punch your head parts; but gravity sports put you in positions of danger that not even auto racing does. No real steering, primitive friction brakes (if any), no rollcages; just a human projectile trying to find and hold the potential edge of controllable velocity. I'll take that punch in the head now, please, and make it snappy.