Forget all of those sleep experts with their mostly useless YouTube videos. If you suffer from insomnia, this should do the job. (Do you think they have sex on that thing?)

For adrenalin junkies, this would be close to a 10/10.

An amazing pic by Stu Gibson, one of the world’s most outstanding action water photographers. Here are more images from Gibson’s shoot in Fiji. (Fiji is an island nation in the Pacific; Fuji is a mountain in Japan.)

Flyboarding is one of the newer extreme water sports. Your feet are attached to rails on flyboard, and the water is propelled through a hose at such high pressure that it launches you high into the air, or through the water. For the absolute best on flyboarding, check out H2RO Magazine.

Sex is no barrier in flyboarding. Here’s Kristen Smoyer, a 33-year old professional flyboarder who was ranked 1st among women in North America and 3rd in the World.

The world record height for cliff diving is 192 feet. There are only about 30 professional cliff divers in the world. So you’re dealing with an elite group when you get into the ranks of those who do the Red Bull competitions. (Check out these amazing videos on the Red Bull website.)

So what happens to a cliff diver’s testicles when he hits the water at 60 mph?

This is Alex Honnold, the world’s top free climber and the first person to successfully achieve a free solo of Yosemite’s El Capitan. The photo is by another incredible athlete and academy award winner, Jimmy Chin for National Geographic.

Mark Munoz took this kick from Eric Simpson, and he still won the match. MMA photographer Esther Linn did a great job of capturing the impact that a well placed kick can have, but the camera does not always tell the truth.

This has all the markings of a liver shot or liver kick, which is a kick or punch that hits the right side of the body directly over the liver.

Photo by Paul Fishwick Photography.  From the Freegun PRO TEAM of riders.

This is an image of Olympic Gold champion Tyler Clary. It was taken by world class photographer Adam Pretty.

If you are wondering how incredible images like these are shot, Nick Stubbs from All Things Photography explains: “Amazing photos like this one were more than likely a screen grab from video footage or a photo pulled from a Nikon D4 or similar shooting at 10 frames per second.” This isn’t as easy as it sounds,

An excellent source of information about extreme sports is ESX—Extreme Sports X.

This photo is of the Chicago Blackhawks sled hockey team playing the team from the Colorado Avalanche at the USA Hockey Sled Classic presented each year by the National Hockey League.

According to the NHL website:

“Sled hockey was invented by a group of Swedes at a rehabilitation center in the early 1960s. Despite their physical disability, these men wanted to continue playing hockey. Sled hockey follows most of the typical ice hockey rules.

Don’t know who the animal on the mountain bike is, but the photo is by Marco IT  on PinkBike.com.

This dude made special skates to keep him from going off the rails. He’s truly a man in search of an adrenaline rush. Wonder if he’s married.

Here’s a video from a few years ago with the Top Ten Insane Roller Coaster Stunts. Some are interesting, others not so much. Maybe if it had been the top five or six?