‘Biggest Loser’ host suffers heart attack

Fitness trainer and host of NBC’s “Biggest Loser” Bob Harper says he is recovering from a serious heart attack that left him unconscious for two days. ‘Biggest Loser’ host suffers heart attack NEW YORK – Fitness trainer and host of NBC’s “Biggest Loser” Bob Harper says he is recovering from a serious heart attack that left him unconscious for two days.