1. BASE JumpingKnown as the most dangerous sport globally, BASE jumping involves parachuting or wingsuit flying from a building, antenna, span (bridge), or earth (cliff). A miscalculation, unexpected gust of wind, or equipment failure can lead to fatal consequences.
2. Big Wave SurfingSurfing big waves demands extraordinary skill and immense courage. Surfers can get trapped underwater if they wipe out, which can result in drowning, not to mention the damage inflicted by the force of the wave itself.
3. Street LugingLying down on a small sled and racing down hills on roads at high speeds is undoubtedly exciting, but also incredibly dangerous. Crashes at high speeds can lead to severe injuries or death.
4. Heli-SkiingHeli-skiing involves jumping out of a helicopter on a snowy mountaintop and skiing or snowboarding down. Avalanche risk, harsh weather, and treacherous terrains make this sport a high-risk endeavor.
5. Cave DivingDivers who venture into underwater caves face numerous risks, such as getting lost, running out of air, hypothermia, or equipment malfunction. This sport requires advanced training and meticulous preparation.
6. Bull RidingBull riding is one of the most dangerous sports, with the risk of getting trampled, gored, or thrown high in the air. Riders wear protective gear, but severe injuries and fatalities are not uncommon.
7. Rock ClimbingRock climbing, particularly free solo climbing without safety equipment, carries an inherent risk of fatal falls. The risk multiplies with unpredictable weather conditions and rockfall.
8. RugbyWith its hard tackles and physical confrontations, rugby has a high risk of injuries ranging from concussions to broken bones. Players often experience long-term health effects related to the intensity of the sport.
9. BoxingWith the primary aim to knock out the opponent, boxing is inherently dangerous. Repeated head trauma can lead to chronic traumatic encephalopathy (CTE), a degenerative brain disease, as well as other lasting health issues.
10. Mixed Martial Arts (MMA)MMA combines techniques from various combat sports and martial arts. The violent nature of the sport often results in serious injuries such as concussions, fractures, and cuts.
11. Motorcycle RacingHigh-speed races, especially like those in the Isle of Man TT, are extremely risky. A slight error can lead to fatal crashes.
12. CheerleadingCheerleading might seem less risky, but the acrobatic stunts performed at great heights can lead to severe injuries, including broken bones, concussions, and even paralysis.
13. Alpine SkiingAlpine skiing, particularly at competitive levels, can lead to serious injuries due to high-speed crashes. Risks include everything from knee injuries to life-threatening head injuries.
14. American FootballThe hard-hitting nature of American football results in many injuries. Concussions are particularly concerning due to the potential for long-term brain damage.
15. MountaineeringClimbing some of the world’s highest peaks is fraught with danger, including avalanches, extreme weather, falls, and altitude sickness. The risk is so high that many climbers never return.

While all these sports are dangerous, it’s important to note that proper training, adherence to safety rules, and use of suitable equipment can significantly reduce the risks involved.