I stood on the rock, in Antarctica, wearing nothing but a swimming costume, goggles and a cap, ready to dive into the ice. The water was 0 C so was the air. I have never done this before, and I had no idea what the outcome will be. Will I panic? Cardiac reaction? Have I come all this way, trained and invested so much money to dive in and flop with fear or incompetence? It was time, I counted to three and dived in and started swimming. I was alive,...