Dean Karzanes can run 350 miles without stopping. The 53-year-old marathon runner has no trouble running a marathon. He even does them back-to-back with hardly breaking a sweat.
His endurance is credited to his body’s ability to flush lactic acid from his system. “I don’t care how fast I go,” he told IE. “I care about how far I go.” He sets out at 2 a.m. to run his first 26.2-mile jaunt.
When he finishes, he joins another 5,000 runners for a marathon in Monterey, California.Typically, as we exercise, the body converts glucose to energy which produces lactic acid as a by-product.
As that builds up in the muscles, it begins causing cramps and fatigue as a signal to stop.Karnazes never receives those signals. As a result, he is able to keep on running without stopping and compete in some of the toughest endurance races in the world.