Low temperatures are a time for fun in -50C and below - riding bikes, ice swimming or eating frozen noodles.
As temperatures sunk to minus 50C and below, schools and kindergartens were closed for the world's hardiest children.
Children aged 7 to 11 miss classes, but older students still expected to attend.
Cold water off a ducks back as Russians vow to keep record forever.
It may seem unusual but sunbathing in snow and wearing nothing more than a swimming costume in -10C can help fitness.