South Korea's Amry Special Warfare Command (SWC) soldiers aim their machine guns in a frozen river during a winter exercise in Pyeongchang, South Korea, Thursday, January 8, 2015. About 200 SWC soldiers participated in this routine two-week winter drill. (Photo by Ahn Young-joon/AP Photo)

A model presents creations by Japanese designer Ayano Ichige from the Autumn/Winter 2022 collection for the label “NON TOKYO” during the Tokyo Fashion Week in Tokyo, Japan, 14 March 2022. The presentation of the Autumn/Winter 2022 collections runs from 14 to 19 March. (Photo by Franck Robichon/EPA/EFE)

A woman yawns as she sits outside a hospital on a cold winter morning in Srinagar January 3, 2019. (Photo by Danish Ismail/Reuters)

The Royal Castle is seen a veil of heavy winter smog in Budapest, Hungary on January 30, 2017. (Photo by Laszlo Balogh/Reuters)

Ariel Winter is seen on February 21, 2017 in Los Angeles, CA. (Photo by Hollywood To You/Star Max/GC Images)

A donkey savors warming temperatures after a long winter at the zoo in Warsaw, Poland, on Wednesday, April 8, 2015. (Photo by Czarek Sokolowski/AP Photo)

A participant competes in the “Farinato Race” winter extreme run competition in Gijon, northern Spain, January 31, 2016. (Photo by Eloy Alonso/Reuters)

Snow covered pine tree reaches for the sky. Shot in Sweden on a crisp winter day. (Photo by Anna Rebecka Lindberg/The Guardian)