Early morning swimmers at Cullercoats Bay on the north east coast of England on Sunday, December 29, 2024. (Photo by Owen Humphreys/PA Images via Getty Images)

People attend the second day of the Lollapalooza Chile Music festival, in the commune of Cerrillos, Santiago, Chile, 22 March 2025. (Photo by Ailen Diaz/EPA)

imena Dominguez of Venezuela competes with the ball in the rhythmic gymnastics on day one of Sky Grace Cup Internationa Rhythmic Gymnastics Tournament at Beijing Shougang Ice Hockey Stadium on November 12, 2025 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

Skeleton involves a person riding a small sled down a frozen track while lying face down. The sport is a more intense form of luge because skeleton competitors leap onto the sled and slide downhill head first. Skeleton athletes can reach up to 80 mph on straightaways, causing forces up to 5g, so the helmet is a critical component for attitude as well as safety.

A model has makeup applied backstage prior to Lebanese designer Zuhair Murad fashion show held during the Haute Couture Fall/Winter 2014-2015 fashion collections in Paris July 10, 2014. (Photo by Philippe Wojazer/Reuters)

A visitor holds up her toy bunny to the aquarium glass in front of Aurora the Russian polar bear at the Sao Paulo Aquarium in Sao Paulo, Brazil, Thursday, April 16, 2015. (Photo by Andre Penner/AP Photo)

A homeless girl asks for alms outside a coffee shop in Mumbai, India, June 24, 2016. (Photo by Danish Siddiqui/Reuters)

Body builders preparing at the backstage during the Bodybuilding Cup in Kiev, Ukraine on November 7, 2015 which includes classic bodybuilding, physicist and body fitness and bikini in the competition. (Photo by Nazar Furyk/Pacific Press)