On a bitterly cold January day several years ago, five-year-old Jimmy Tonglewicz chased a sled onto the glazed ice of Lake Michigan. In a blink of the eye he disappeared beneath the ice. The last words his dad heard were: “Save me, Dad!” Jimmys panic-stricken father plunged into the freezing water, but the cold quickly rendered him helpless and he left the scene in an ambulance. For over twenty minutes Jimmy remained submerged beneath the icy waters. When his limp, lifeless body was pulled from the lake by divers, he had no pulse. But he had a lot going for himespecially the cold water! Scientists call what happened the “mammalian diving reflex.” The shock of the cold water allowed Jimmy to live without breathing an abnormally long time. Slowly he came around, and today Jimmy lives a normal life.