It’s not unusual for Scandinavian parents to leave their kids outside to nap in their pram. This article shows how it is not uncommon to let them sleep in temperatures below 0c. Some pre-schools encourage the children to stay outside for as long as possible and only go inside for meals or when the weather is exceptionally cold.
The Swedish saying “There is no bad weather, only bad clothing” further highlights the Nordic attitude towards the cold.
Do you think that this cultural phenomenon could take off in other European countries?