
Junyong Pak, 2 time Toughest Mudder World Champ smashes Guinness Book World Record by running the fastest marathon (3:12:47) carrying a 40lb. weight. Pak says: “it’s an addictive rush when you’re so good at tolerating pain—and you come out the other side”. Few would argue that when Junyong toes the start line at any obstacle…