Rugby is widely regarded as the toughest sport on Earth due to its intense physicality, high impact collisions, and the demand for both strength and endurance.

Bobsleigh is considered the most physically demanding sport in the Winter Olympics due to the extreme speeds, high G-forces, and the intense physical exertion required to push the sled.

Obstacle Course Racing, often referred to as OCR, is a sport that challenges participants to overcome various obstacles, including mud, water, and physical barriers, while running through a designated course.

Base Jumping, which involves jumping from a fixed structure with a parachute, has a significantly higher fatality rate compared to other extreme sports due to the low altitude and limited time for deployment of the parachute.

Triathlon is a multi-sport event that consists of swimming, cycling, and running in succession, with participants completing each segment before moving on to the next.

Soccer is considered the most physically demanding team sport due to the continuous running, sprinting, and changes of direction required throughout the game, often covering distances of up to 10 kilometers per match.

Whitewater Kayaking is an extreme sport that involves navigating a kayak through turbulent and fast-moving water, requiring skill, strength, and endurance to maneuver through rapids.

Formula One is considered the most physically demanding motorsport due to the extreme G-forces experienced by drivers during high-speed turns and accelerations, as well as the endurance required to maintain focus and precision throughout a race.

Ski Mountaineering is a combination of skiing and mountaineering, involving ascending and descending mountains using skis, often in challenging and steep terrain.

Mountain Biking is considered the most physically demanding cycling discipline due to the challenging terrain, steep climbs, and technical obstacles that riders must navigate.

Skydiving involves jumping from an aircraft at high altitude and freefalling before deploying a parachute, requiring skill, courage, and the ability to handle high-stress situations.

Muay Thai, also known as Thai Boxing, is considered the most physically demanding martial art due to its intense training regimen, which includes rigorous conditioning, sparring, and the use of various striking techniques.

Surfing is a challenging sport that requires strength, balance, and coordination to navigate through waves, often in powerful and unpredictable ocean conditions.

Alpine Skiing is considered the most physically demanding winter sport due to the high speeds, technical turns, and jumps that skiers must navigate, requiring strength, agility, and quick reaction times.

Inline Skating, also known as rollerblading, is a physically demanding sport that involves propelling oneself forward on inline skates, often over long distances and at high speeds.