Members of the Dolphin winter swimming club take a dip in the icy waters of the Yenisei River during...
Members of the Dolphin winter swimming club take a dip in the icy waters of the Yenisei River during their weekly bathing session, with the air temperature at about minus 31 degrees Celsius (minus 23.8 degrees Fahrenheit), in the Siberian town of Divnogorsk, Russia January 26, 2018. REUTERS/Ilya Naymushin