We warn you in advance that playing all the sports described here is potentially dangerous to your health (as, indeed, all of life). The main danger of these sports is that they are gradually turning into a lifestyle. But this also has its advantages: in addition to the undoubted benefits for the physical health of your body, you will have a much more fun time with a crowd of crazy extreme sports enthusiasts than drinking in the hallway or staring mindlessly at the TV. In addition, representatives of the opposite sex will express double respect for you if you are extreme...