Children exercise before a wrestling practice session at an old Basque ball game gymnasium in downtown Havana, October 30, 2014. (Photo by Alexandre Meneghini/Reuters)

Models get prepared backstage before Wagner Kallieno Winter Collection 2016 show during Sao Paulo Fashion Week in Sao Paulo, Brazil, October 23, 2015. (Photo by Paulo Whitaker/Reuters)

Residents of the Brussels suburb of Molenbeek are searched by police before taking part in a memorial gathering to honour the victims of the recent deadly Paris attacks, in Brussels, Belgium, November 18, 2015. (Photo by Yves Herman/Reuters)

Snow blows off the Svalbard Global Seed Vault before being inaugurated at sunrise, Tuesday, February 26, 2008. (Photo by John McConnico/AP Photo)

A dancer sanitizes the pole before performing on the outside patio at Cheerleaders Gentlemen's Club in Gloucester City, New Jersey, U.S. July 17, 2020. (Photo by Rachel Wisniewski/Reuters)

Models prepare backstage before a fashion show by Israeli designer Yossef during the Tel Aviv Fashion Week on November 21, 2011 in Tel Aviv, Israel. (Photo by Uriel Sinai/Getty Images)

A female bodybuilder apples oil to another performer backstage before an amateur competition in the Israeli city of Dimona, in this April 3, 2014 file photo. (Photo by Finbarr O'Reilly/Reuters)

A performer from Cirque du Soleil's show “Quidam” practices backstage before a show at the MEO Arena in Lisbon December 18, 2014. (Photo by Rafael Marchante/Reuters)