If, at some point in your life, you've seen someone jump over a forest of trees while riding a dirt bike before parachuting into a river, then you can skip this video.
If not, check out this video from the Finnish Stunt Freak Team:
Remember, kids, always keep two hands on the bike. Unless you're attached to a parachute and you're jumping into a river, then it's OK to let go.
(H/T to Bro Bible)