Ready to kick those extra pounds to the curb just like the contestants on the NBC hit series The Biggest Loser? Join trainers Bob Harper, Anna Kournikova and Dolvett Quince for a hard-core mix of kickboxing, martial arts and cross-training circuits in The Biggest Loser: Calorie Knockout. This extreme cardio workout includes three 15-minute routines designed for extreme fat burn - and extreme results at home. Start with Circuit #1, then add on Circuit #2 and Circuit #3 when you are ready for an increased challenge. But don't be intimidated - past contestants will be by your side, encouraging you every stop of the way. Warm Up (5 min): Get your body ready for a high intensity challenge by increasing your heart rate and prepping your muscles and joints. Circuit #1 (15 min.): Anan takes you through a cardio-sculpt workout that will leave you dripping in swear, yet feeling strong and powerful. Melt away the fat with alternating bouts of basic cardio kickboxing and strength exercise using dumbbells. Circuit #2 (15 min.): In his trademark style, Bob blends different types of training into one workout beginning with a total-body strength move, then an explosive cardio move, and then finishes with a power yoga pose. Circuit #3 (15 min.): Dolvett's Tabata Circuit workout will get results fast! Simply do one exercise for 20 seconds, followed by 10 seconds of recovery, repeated eight times, and you'll get the workout of your life! Cool Down (5 min.): Slow things down with active stretches to calm muscles and reward your body.