Our kids didn't do this to themselves. They don't decide the sugar content in soda or the advertising content of a television show. Kids don't choose what's served to them for lunch at school, and shouldn't be deciding what's served to them for dinner at home. And they don't decide whether there's time in the day or room in the budget to learn about healthy eating or to spend time playing outside.

You know, you have to start with hope...you don't get anywhere in this country without hope. So it's a necessity. What Barack says is that people have to understand hope isn't just blind optimism. It isn't passive. It isn't just sitting there waiting for things to get better. Hope is the vision that you have to have. It's the inspiration that moves people into action...There are more people engaged in this political process in this year than we've seen in my lifetime. And it is all because of hope because people believe in the possibility of something unseen.

Some kids have never seen what a real tomato looks like off the vine. They don't know where a cucumber comes from. And that really affects the way they view food. So a garden helps them really get their hands dirty, literally, and understand the whole process of where their food comes from. And I wanted them to see just how challenging and rewarding it is to grow your own food, so that they would better understand what our farmers are doing every single day across this country and have an appreciation for ... that American tradition of growing our own food and feeding ourselves.

Much of what we do with our kids is social and that's good, and we shouldn't stop all that. I mean, how boring would it be that, no, we can't eat anything out so we're just going to go home and sit in the closet and wait to the next day.

And let's be clear: It's not enough just to limit ads for foods that aren't healthy. It's also going to be critical to increase marketing for foods that are healthy.

It's all about, you know, continuing to get to know ourselves in a very diverse and complicated country that is America. It is a wonderful place to live. But because it is so diverse, our challenges are complex.

One thing that I've learned from male role models is that they don't hesitate to invest in themselves, with the view that, if I'm healthy and happy, I'm going to be a better support to my spouse and children. And I've found that to be the case: Once my kids were settled, the next thing I did was take care of my own health and sanity. And made sure that I was exercising and felt good about myself. I'd bring that energy to everything else that I did, the career, relationship, on and on and on.