Extreme athlete Wim Hof has set records for immersion in icy water, and he recommends it for physical and mental health. Find out why his wife's suicide drove Hof to master controlled hyperventilation -- in breathtaking cold -- to become happy, strong, and healthy. (Everything else, he'll tell you, is BS.) Surprisingly, heart and brain science just may support the Wim Hof Method.   http://www.wimhofmethod.com/ Plus...contrasting ice and fire, with a firewalking story courtesy of Jim Metzner www.pulseplanet.com