Ice swimming is a strange outpost on the edge of our sport. It’s real, growing, and intense, but still outside the formal World Aquatics structure. In this GMM takeover of the SwimSwam Podcast, we sit down with Chris Ballard, author of THE PLUNGE: Maverick Swimmers, an Unlikely Quest, and the Transformative Power of Cold Water. The book drops June 9th from Simon & Schuster.