A human body immersed in water that’s frozen at the surface can survive for about 10 minutes. The freezing cold water quickly absorbs body heat, and the metabolism can only resist this thermal shock for a short time. And yet, young Jimmy Tontlewicz, who was declared dead after a 20-minute immersion in the icy waters of Lake Michigan, is alive and well today. It was his body that fought for him: it was, after all, a matter of life and death...