Want to Stay Active and Healthy? Get Gwen Stefani's Rockstar Fitness Advice

You don't get abs like Gwen's by doing a 30-minute power walk. Busy mom Gwen makes the most of every workout. "There is no secret: you just have to eat healthy, work out, and torture yourself," she told Harper's Bazaar in 2012.

When it comes to exercise, Gwen does a mix of HIIT consisting of cardio and supersets; check out Gwen's workout routine here.