Falling from the sky or being deep underwater, some people’s worst nightmares are another’s idea of a fun afternoon. Extreme sports have been attracting adrenaline junkies for years. They are always trying to push themselves to their limits. In spite of the danger, people still compete in these extreme sports. Here are the top ten most dangerous sports, in no specific order.

1. BMX Racing

Bicycle Motorcross, or BMX, is an offroad bike race ridden on BMX bikes. This sport combines racing and stunts on flatland and vertical ramps. While the bikers try to push themselves to perform new and exciting acrobatic stunts, they are likely to injure themselves. BMX is now a popular event at the annual Summer X Games and grows more popular all the time.

2. Highlining

Similar to the tightrope act in the circus, highlining involves walking from one cliff to another along a rope high off the ground. That is where the similariites end. In highlining, there is no safety net, no blancing pole, and the rope is slack and unstable, which makes it infinitely more difficult.

3. Sky Surfing

A type of sky diving, in sky surfing the athlete performs stunts during their descent with a board attached to their feet. This extreme sport usually involves two people, one performing the tricks and one to film the act.

4. Base Jumping

BASE jumping is one of the world’s most dangerous sports and is illegal in many countries. BASE is an acronym which stands for Buildings, Antenna, Span, and Earth. The participants hurl themselves from these fixed structures and have only a few seconds to depoly their parachutes. One in every 2,317 jumps ends in death.

5. Bull Riding

This is a rodeo sport in which people ride atop a a large bull and try to stay there while the bull is trying to buck them off. While the fall can cause concussions and injury, it is the bull you need to look out for. Weighing up to 1,800 pounds, you would not want to be kicked or trampled by one of these bulls.

6. Creeking

Creeking is whitewater kayaking taken to the extreme. This sport involves kayaking down very step and shallow waters and waterfalls. Aside from the danger of crashing into rocks, you can also get trapped underwater.

7. Scuba Diving

A fairly popular sport, when scuba diving you are deep underwater with only a small supply of oxygen. Being able to swim among the fish may seem like a dream but it is not without its perils. If the ascent is too fast, it can cause decompression illnesses such as lung, spinal cord, and brain failure.

8. Free Soloing

Rock climbing is already a dangerous sport, but imagine it without the safety ropes, harness, and other protective gear. Climbers are only able to rely on their strength, stamina, and climbing abilities. One slip up and it’s all over.

9. Cave Diving

Cave diving is, as the name would suggest, diving down into uderwater caves. The hazards of this extreme sport include low lighting, impaired visibility, equipment failure, and air loss.

10. Wingsuit Flying

Much like a flying squirrel, these extreme athletes put on a special jumpsuit and are able to glide through the air. By jumping from a high altitude and spreading their arms and legs to increase surface area, they are able to fly through the air. To safely land they must deploy their parachute. Only the most experiences skydivers are allowed to participate in this extreme sport.