Today, I was smoking out in the street, wearing only a towel. The temperature was around zero degrees Celsius. That kind of experience is possible only in Kallio, the most Bohemian city district of Helsinki. I was visiting a public sauna. Between sessions in sauna, people prefer to go out to get some fresh air, and it is customary to wear only a towel. Some people smoke, others just chill out. After the heat of sauna, zero degrees Celsius does not feel cold, it just feels refreshing.