Jillian Michaels has shown her abilities as a longer-term trainer on The Biggest Loser, and in her new show she'll demonstrate how effective she can be in just a week. On NBC's Losing it with Jillian (Tues, 10/9c), the 36-year-old moves in with a different family each week to help them discover their "epiphany rock bottom moment." TVGuide.com spoke with Michaels about what viewers can expect from her new series, why diet is key, and how she's more a life coach than anything else.