Happiness for me is when my kids are good and when my family is whole.

This is really what the White House is all about. It’s the “People’s House.” It’s a place that is steeped in history, but it’s also a place where everyone should feel welcome. And that's why my husband and I have made it our mission to open up the house to as many people as we can.

In the 10 cities with the nation's highest obesity rates, the direct costs connected with obesity and obesity-related diseases are roughly $50 million per 100,000 residents. And if these 10 cities just cut their obesity rates down to the national average, all added up they combine to save nearly $500 million in healthcare costs each year.

When I was little, I wanted to be a mother, because that's who I saw. I saw my mom caring for me. I didn't play doctor. I didn't play lawyer. I didn't have those visions until I was in college, meeting people who were doing those things. That's why we're trying to encourage moms, teachers, fathers, to be that presence in their children's lives, in their communities, because it really makes a difference.

I mean, let's take the average spouse. You know, you show up in an employer's, you know, office, and it's shown that you've changed jobs every two years. Well, to many employers that could be viewed as a red flag. But the truth is, is that you've made those moves because you're serving your country, and each time you've found a career, and you've been able to provide for your family, and you've continued to volunteer, and on and on and on.

For me, being a mother made me a better professional, because coming home every night to my girls reminded me what I was working for. And being a professional made me a better mother, because by pursuing my dreams, I was modeling for my girls how to pursue their dreams.

I've always been a closet jock. With exercising, the more you do it, the more you get into it. And the more you see results, the more you're pushing for the next level.