Bob Harper seemed like the picture of health to millions of fans of The Biggest Loser. So the world was shocked -- and so was he -- when he suffered a heart attack during a workout. Bob discovered that he has familial hypercholesterolemia that lead, a hereditary condition that causes high levels of LDL cholesterol and increases the risk of heart attacks and strokes. Bob gets honest about the emotional toll of having a heart attack at 52, the lessons he's learned and his new approach to fitness. Get to know a new side of inspirational health and wellness coach Bob Harper on At the Heart of It With Nancy Brown.