Jillian Michaels is back with a new workout video, Ripped in 30 ($12), promising to get you in ‘insane shape’ in 30. It’s smart of her not to specify: 30 days? 30 weeks? You’re better off not knowing. This DVD features four levels of workout as well as a free 30-day meal plan. If you haven’t tried Jillian, this is a good video to start. She’ll help you discover muscles you did not even know existed.