I remember once seeing something on TV about a woman who can swim long distances in extremely cold water. In fact, she successfully swam a mile in the frozen waters of the Antarctic wearing only the usual swim suite, goggles and cap. This ability is absolutely rare. I thought of her when I heard about the subject of Thomas Hilland’s short documentary Sweat - Timo Kaukonen is a four-time World Sauna Champion who enjoys sitting in the extreme heat that would cause other people serious skin burns.