When Thinspiration Strikes: 9 Women's Success Stories

"OMG -- Shaq weighed less than me!"

"I was watching an NBA game in October 2008. I realized when they showed the players' stats that at five feet six inches tall, I weighed more than a seven-foot-tall male pro basketball player. I dove right into a healthy lifestyle. Two years later I've lost 170 pounds."

-- Tracie Camacho Seibold, 39, Beaverton, Oregon

Know your digits: Click here to find your body mass index; a score between 18.5 and 24.9 means you're within a healthy weight range.