Photo: cartwheels in a swimsuit at the South Pole

Sandwichgirl is stationed at McMurdo, in Antarctica. She took a trip from there to the South Pole, and in this photo she is doing cartwheels in a bathing suit at that site: - 25.5° F, -44.7° F windchill, 9.4 knots. This chick's got some major cojones. Link. (thanks, T. bias!)