Age: 25
Sport: Swimming
Hometown: San Francisco
Training: Two hours in the pool twice a day, running with her dog for 45 minutes to an hour every day, and lifting weights two or three times a week. Natalie also does Pilates every day and sees a private instructor two times a week.
Olympian Tip: Competing is not life or death. Since 2004, Natalie has developed a healthier view on where swimming falls in her life.
"I'm learning to find a better balance. Because at the end of the day, it's a game -- it's supposed to be fun."