This lines up with my experience - my Russian immigrant girlfriend has very little tolerance for cold, which surprised me considering how low temperatures get i

This lines up with my experience - my Russian immigrant girlfriend has very little tolerance for cold, which surprised me considering how low temperatures get in Moscow. She explained that bundling up during the winter is taken so seriously that babies and young children wear thick insulating hats pretty much 24/7 during every non summer month. The idea that being cold causes colds (infections generally) is taken for granted by Russians. Oddly, taking a dip in ice cold water is considered good for your health.