Competitors in the Big Air challenge at the Proryv-2016 festival of extreme sports in Moscow, Russia on March 27, 2016. (Photo by Xinhua/Rex Features/Shutterstock)

Participants take part in an extreme run “Bison race” near the town of Logoisk, Belarus September 17, 2016. (Photo by Vasily Fedosenko/Reuters)

A participant competes in the “Farinato Race” winter extreme run competition in Gijon, northern Spain, January 31, 2016. (Photo by Eloy Alonso/Reuters)

A woman poses with her tattoo during the Shanghai Tattoo Extreme & Body Art Expo 2017 in Shanghai, China September 2, 2017. (Photo by Aly Song/Reuters)

Professional wrestlers Helen Charlotte Campbell and Dark Sheik (R) compete during an evening of wrestling entertainment, presented by promoter “TNT Extreme Wrestling'” in Liverpool, northern England, on September 17, 2023. The event pitted UK-based wrestlers representing 'TNT Extreme Wrestling' against US wrestlers from “Game Changer Wrestling” and featured Helen Charlotte Campbell versus Dark Sheik, which is understood to be the first singles wrestling match between binary trans women in the UK. (Photo by Oli Scarff/AFP Photo)

People take part in the "Bison Race" winter extreme run competition in Zhodino, Belarus, December 5, 2015. (Photo by Vasily Fedosenko/Reuters)

A participant in the Crazy Races extreme sports game competes in the cross-country obstacle race in Ufa, Russia on September 21, 2015. (Photo by TASS/Barcroft Media)

“Kilauea Rules”. The most extreme place we put ours kayakers to paddle till now. Photo location: Big Island, Hawaii. (Photo and caption by Alexandre Socci/National Geographic Photo Contest)