Exercise is really important to me - it's therapeutic. So if I'm ever feeling tense or stressed or like I'm about to have a meltdown, I'll put on my iPod and head to the gym or out on a bike ride along Lake Michigan with the girls.

I tell my kids, 'I am thinking about you every other minute of my day.'

It's not about government telling people what to do. It's about each of us, in our own families, in our own communities, standing up and demanding more for our kids. And it's about companies like Walmart answering that call.

Since we started the Let's Move! initiative, I've been looking for as many ways as possible to help families and kids lead healthier lives. And I've come to realize that if we were going to take just one step to make ourselves and our families healthier, probably the single best thing we could do is to simply drink more water. It's as simple as that. Drink more water.

Do not ever let anyone make you feel like you don't matter, or like you don't have a place in our American story - because you do.

Investing in girls' education is the very best thing we can do, not just for our daughters and granddaughters, but for their families, their communities, and their countries.

If my future were determined just by my performance on a standardized test, I wouldn't be here. I guarantee you that.