I have a big bag of M&M's in the pantry, and I have a scoop after lunch. That's my treat.

My healthiest habit is eating a healthy breakfast every morning. I never miss breakfast. As a busy mom, there will be days when I'm cruisin' along and I'll look at the clock and I haven't eaten lunch. And I'll run downstairs, and I'll start shovelin' stuff down the pie hole, and I'll think, 'That was no lunch at all.'

Being a pro athlete doesn't mean you treat your body right, even though it's so important to what you do. Being a runner and training for important races has taught me more about how to fuel than swimming ever did. I realize it's a process and part of the commitment.

To be a champion, I think you have to see the big picture. It's not about winning and losing; it's about every day hard work and about thriving on a challenge. It's about embracing the pain that you'll experience at the end of a race and not being afraid. I think people think too hard and get afraid of a certain challenge.

Thinking about your training should put a smile on your face. As cliche as it sounds, you are worth all the time and energy you've put in. Unleash your emotions with a cheer, or even a signature roar, after a tough workout.

The 2013 Boston Marathon was, for me, a milestone. A bucket list event that was supposed to be my last marathon until my next big milestone, turning 50. But I couldn't leave marathoning on a memory like that, so I am running this year to honor everyone in the running community and those unsung heroes from April 15, 2013.