Almost everyone in Scandinavia during the Viking age were farmers. Only a very few were Viking warriors. So I'm guessing that the vast majority of Scandinavians

Almost everyone in Scandinavia during the Viking age were farmers. Only a very few were Viking warriors. So I'm guessing that the vast majority of Scandinavians lived quite similarly to all other farmers of the times at northern latitudes. Also I'm pretty sure that modern Swedes have more in common to modern North Koreans than either do to the Vikings. They lived in such different times and cultures that I don't really think it makes sense to compare them. Maybe you could ask how cold dark winters affected Vikings and how they affect modern Swedes, but even then the winters were much harder for Swedes 100 years back than they are today when the country is much richer. So really the inhabitants 1000 years back might as well be considered aliens compared to the Swedes of today.