You don't have to put an age limit on your dreams.

When I feel like my body is exhausted, I focus on making my fifth Olympic team so I can push through it.

People will get into the habit of doing the same thing over and over again, and you'll stop seeing changes in your body. If you add variety and spice things up, I think it'll help you to stay motivated.

I've wanted to win at everything, every day, since I was a kid. And time doesn't change a person, it just helps you get a handle on who you are. Even at age 41, I still hate losing--I'm just more gracious about it. I'm also aware that setbacks have an upside; they fuel new dreams.

Michael wasn't on the pool deck, which was hard for me. None of my old Coral Springs teammates were around. Still, that old plane of cement felt like home. I folded my clothes and put them on the bench. I placed my water bottle under my starting block, and I dove in. Once again, I felt that ultimate state of transition, my feet no longer on the ground, my hands not yet in the water.

When I revealed the campaign, some lady in the front row, a photographer, asked "is that airbrushed?" So I just lifted my shirt up and my stomach was the exact same thing as in the ads. It was actually kinda nice that she said that, because I'm sure plenty of people probably thought that. That's one of the reasons I did it - especially when you work so hard to get your body to look like that - it's frustrating.

I think if you can be a goal-setting person, it makes it easier to stay motivated.