Gwen Stefani didn't sugarcoat anything following the birth of her first child, Kingston, in 2006. "It's so much work afterward to get the weight off," she told Harper's Bazaar in 2007. But, she added, "If you just do it, it comes off. And when you're nursing, like I am, your metabolism is like, whooosh!"
Whooosh is a pretty apt way to describe how quickly she shed the pounds the second time around. Ten months after welcoming her second child, Zuma, while performing at a concert in Canada, Gwen Stefani showed off abs us regular people work for years to attain. And by that, we mean she had a freaking six pack just months after giving birth (to her second child in a little over two years, no less). The No Doubt frontwoman and "Hollaback Girl" singer told InStyle she committed to working out four days a week with trainer Mike Heatlie. "I've tried yoga and Pilates before, but I just prefer old-school fitness workouts," she said.
Want your abs to be just as rock steady? Heatlie suggested that women, whether pregnant or not, do more lightweight resistance training with limited rest periods between sets, and do less cardio. But just working out won't cut it. "Diet plays a big big role in losing weight, period," Heatlie advised in the same InStyle article.