When our Mom Squad first swooped in on Karen Konigsberg for Parenting's August 2005 issue, the single mom of two was frustrated about her inability to lose the pounds she'd gained during her closely spaced pregnancies. The weight, she says, was affecting everything from her social life to her willingness to pose in photos with her sons. Nutrition expert Ellie Krieger, R.D., immediately honed in on Konigsberg's dietary trouble spots  -- and amazingly, the busy working mom has dropped more than 50 pounds since she began her new Mom-Squad-inspired life! Here, the lessons she learned, and how you can apply them to your own life.

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