7 years-old twins brothers Miroslav and Timophei Yaroshenko, members of the Cryophile winter swimmers club, play on a bank the Yenisei River covered in snow and hoarfrost, with the air temperature at about minus 38 degrees Celsius (minus 36.4 degrees Fahrenheit), in Krasnoyarsk, Russia on January 19, 2018. (Photo by Ilya Naymushin/Reuters)
