A girl carries a toddler through a flooded street after the passage of Hurricane Rafel in Batabano, Mayabeque province, Cuba, on November 7, 2024. (Photo by Yamil Lage/AFP Photo)

An artist performs a fire kettle show during the Mid-Autumn Festival at a night market in Beijing, Tuesday, September 17, 2024. (Photo by Andy Wong/AP Photo)

Riders perform during a freestyle motocross show at the EICMA exhibition motorcycle fair in Rho, outskirt of Milan, Italy, Thursday, November 7, 2024. (Photo by Luca Bruno/AP Photo)

The Rockettes perform at the Rockefeller Center Christmas tree lighting ceremony in New York, US on November 30, 2021. (Photo by Ralph Bavaro/NBC/NBCU Photo Bank via Getty Images)

Girls prepare to take part in a mermaid lesson in Rio de Janeiro, Brazil May 28, 2017. Women in Brazil are not unique in their affinity for mermaiding. Classes are held as far away as Texas and some folks wonder if mermaiding will be the next fitness craze. (Photo by Pilar Olivares/Reuters)

Passengers check their mobile devices as a bin is full of garbage during a protest by the cleaning staff at Barcelona's airport, Spain, December 1, 2016. (Photo by Albert Gea/Reuters)

Members of Tom Maior Special Group samba school perform during the carnival parade at the Anhembi Sambadrome in Sao Paulo, Brazil, 22 Febr​uary 2020. Carnival is the biggest and most popular celebration in Brazil. (Photo by Sebastiao Moreira/EPA/EFE)

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.