Firefighters and emergency personnel climb the stairs during the Melbourne Firefighter Stair Climb at the Crown Metropol Melbourne in Melbourne, Australia, 10 September 2022. The Melbourne Firefighter Stair Climb features firefighters and emergency personnel climbing 28 flights of stairs wearing 25kgs of turnout gear to raise money for mental health. (Photo by Con Chronis/EPA/EFE)

Winter swimmers dressed in ballet costumes pose for a photo before diving into the icy water, during a snowfall at a park in Shenyang, Liaoning province, China on February 15, 2019. (Photo by Reuters/China Stringer Network)

People hop in sacks during Khmer New Year celebrations at Chau Say Tevoda temple in Siem Reap province on April 14, 2022. (Photo by Tang Chhin Sothy/AFP Photo)

A man presents a self-made robot that local media reported is able to carry a person, in Heihe, Heilongjiang province, China, April 5, 2017. (Photo by Reuters/China Daily)

An athlete takes part in a warm-up around the track of the National Stadium in Tokyo on September 12, 2025, ahead of the World Athletics Championships. (Photo by Kirill Kudryavtsev/AFP Photo)

Soldiers and firefighters carry the body of Chilean President Salvador Allende, wrapped in a Bolivian poncho, out of La Moneda presidential palace after it was bombed during a coup by Gen. Augusto Pinochet in Santiago, Chile, September 11, 1973. (Phoot by El Mercurio/AP Photo)

A Russian prisoner eating bread. (Photo by Hulton Archive/Getty Images). Finland, circa 1940

In this photo taken on Saturday, May 2, 2020, funeral workers, wearing protective suits, lower the coffin of Semen Muchka, 71, who died of coronavirus disease, into the grave at a cemetery in Krynytsya, Ukraine. (Photo by Evgeniy Maloletka/AP Photo)