The former Biggest Loser star and celebrity trainer presents a high intensity workout and eating plan that delivers big results in just 20 minutes a day.From his days as a trainer on The Biggest Loser, Bret Hoebel knows that when people log hours on a treadmill, they'll lose weight. But he also knows that most of his clients don't have the schedule or the desire to spend that much time at the gym. And the truth is—the number of minutes you spend working out isn't ...