> 5-6 hours a day biking in -15C snow with wet feet (Mailman).
As a Swede, aren't you familiar with the saying "There's no such thing as bad weather, only bad clothes"? :-)
I did spend one summer planting trees in Sweden. It was miserable, but in a good way: I'd sleep well every night. I'm not sure how well I'd put up with something like that over an extended period of time though.