Put down the TV remote and step away from your Netflix queue.
It's time to have some real fun -- the kind that makes your palms sweat and your heart race. The kind that gets caught in your throat, emerging only after the adrenaline dies down as a primal, life-affirming holler. The kind your mom might shake her head at with a concerned look and an exasperated sigh.
Some of the clips below (who are we kidding - most) are foolish even in the best of circumstances. It goes without saying, but you shouldn't attempt any of these on your own.
Below, we've collected videos of those whose zeal for life expresses itself in unconventional, yet downright awesome ways.