Iberian lynx Mistral jumps in a field after being released by Portugal's Minister of Environment Joao Matos Fernandes (unseen) and others in the Mount Milhouro (Herdade da Cela) region in Mertola, Portugal, 13 May 2016. Mistralis the 18th lynx bred in captivity released since late 2014. (Photo by Nuno Veiga/EPA)

To an outsider, their passion is at times illegal and often on the verge of life and death. But climbing rooftops of high-rise buildings and exploring abandoned facilities is in the blood of these young Muscovites. The small group calls itself “Rudex”, which stands for “roof and decay exploration”, and is akin a Western youth craze known as urbex or “urban exploration” of man-made structures. Here: Urban explorer Vad Him of Rudex team jumps whilst on a rooftop in Moscow, Russia, August 14, 2017. (Photo by Maxim Shemetov/Reuters)

A policeman jumps as he tried to avoid a tear gas grenade thrown back towards police by protesters in the Mathare neighborhood of Nairobi, Kenya Wednesday, July 12, 2023. Kenyans angered by the rising cost of living were back protesting on the streets of the capital, Nairobi, on Wednesday, as they awaited a speech by a longtime opposition leader. (Photo by AP Photo/Stringer)

A woman jumps over a puddle of rainwater in north London on August 2, 2023. Met Office has issued a yellow severe weather weather for heavy downpours, strong winds and thunderstorms throughout today in London, and in many other parts of England and Wales. (Photo by Dinendra Haria/London News Pictures)

A skater jumps through a ring of fire at the La Bodega Skate facilities as part of one of the Vans contests to showcase the top street skaters in Europe on September 16, 2023 in Jerez de la Frontera, Spain. (Photo by Juan Carlos Toro/Getty Images)

Uzbekistan's Ekaterina Voronina competes during the long jump in the women's heptathlon at the 2022 Asian Games in Hangzhou in China's eastern Zhejiang province on October 1, 2023. (Photo by William West/AFP Photo)

A cheerleader jumps for joy before the start of the Pan-Am Games in Santiago, Chile on October 31, 2023. Thousands of athletes from across the Americas are competing before the Paris Games next year. The International Olympic Committee recognised cheerleading as an Olympic sport in 2021. (Photo by Dylan Martinez/Reuters)

Sean Tschigerl #19 of the Calgary Hitmen, Tyson Galloway #22 of the Calgary Hitmen and David Adaszynski #17 of the Calgary Hitmen jump into the stuffed toys after a goal in the first period on the Prince Albert Raiders during the annual Teddy Bear Toss at the Scotiabank Saddledome on December 03, 2023 in Calgary, Alberta. (Photo by Leah Hennel/Getty Images)