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Join America's toughest trainer, Jillian Michaels, for a six-week program designed to strengthen your core and sculpt lean, defined abdominal muscles. Featuring two progressive 30-minute workouts, 6 Week Six-Pack combines high-intensity car...

Jillian Michaels, Amerikas härteste Fitnesstrainerin, verhilft dir in 6 Wochen zu flachen, definierten Bauchmuskeln. Vergiss langweilige Sit-Ups - Jillians einzigartiges Bauch-weg-Trainigssystem ist eine Kombination aus gezielten Cardio- u...