As a data point that it isn't so shocking, I'm in the US and my father said his parents put him and his siblings out to nap in their unheated porch on winter da

As a data point that it isn't so shocking, I'm in the US and my father said his parents put him and his siblings out to nap in their unheated porch on winter days as infants. That wasn't some homey, rural childhood -- he was born and raised in Chicago, though it was the late 20s/early 30s.