Build strength, shed pounds and lose big at home just like the at-home winners on the NBC hit series The Biggest Loser. In At Home Challenge, join trainers Bob Harper, Anna Kournikova and Dolvett quince for four 10-minute workouts designed for maximum results fast. Phase One includes Cardio aerobic moves used for tennis and athletic training, while the Strength component builds lean, powerful muscle through body-weight training. Then, kick it up with Phase Two Cardio and Strength using light weights to get your metabolism working overtime. Past-season at-home winners will be with you every step of the way, helping you go from beginner to winner in just four weeks! Warm-up (5 min): Get your body ready for a challenge while gradually increasing your heart rate. Phase One Cardio (10 min): Start dropping pounds with aerobic moves used for tennis and athletic training. Phase One Strength (10 min): Build lean, powerful muscle using body-weight training moves designed for maximum results at home. Phase Two Cardio (10 min): Cardio intervals using light weights will get your metabolism working overtime! Phase Two Strength (10 min): Kick it up with strength conditioning adding weights for an increased burn. Cool Down (5 min): Lower your heart rate and stretch your muscles to enjoy your accomplishments.