Participants look to a chart, to mark their visit before moving on to another sauna, during the European...
Participants look to a chart, to mark their visit before moving on to another sauna, during the European Sauna Marathon in Otepaa, February 10, 2013. More than 600 participants took part in the event by visiting 20 saunas with a total distance of over 100 km (62 miles). The word on the hard hats read, "Sauna engineers". Picture taken February 10, 2013. REUTERS/Ints Kalnins (ESTONIA - Tags: SOCIETY)