In this May 10, 2013 photo, a man waves from a mobile sauna by the Market Square in Helsinki, Finland. . Invented by the Finns, saunas are source of national pride and most private homes have them. (AP Photo/Pekka Sakki, Lehtikuva) FINLAND OUT

Associated Press
In this May 10, 2013 photo, a man waves from a mobile sauna by the Market Square in Helsinki, Finland. . Invented by the Finns, saunas are source of national pride and most private homes have them. (AP Photo/Pekka Sakki, Lehtikuva) FINLAND OUT
In this May 10, 2013 photo, a man waves from a mobile sauna by the Market Square in Helsinki, Finland. . Invented by the Finns, saunas are source of national pride and most private homes have them. (AP Photo/Pekka Sakki, Lehtikuva) FINLAND OUT
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