Luging
Luge is one of those sports that nobody really understands how people even get into it. Like, have you ever seen a luge course that was accessible to the public? If there was one, people would probably be dying at a much more alarming rate than they have been.
The Science Behind It
Essentially, luge is just extreme sledding. You lay on a sled and travel down a solid ice course at speeds upwards of 90mph. You can, and theoretically should break a few bones while doing it. There hasn't been a confirmed number of deaths caused by luge, but there have been 407 luge injuries in the past seven years.