'Biggest Loser': Bob Harper 'stunned' by Rachel Frederickson's weight loss
"What people don't understand is, when contestants leave to go home ... they're in charge of themselves," says Harper. "So, I had not seen her until that night, and so when she walked out, I was just like of like, 'whoa.' And I've been on the show since the beginning, forever. ... I was stunned. That would be the word. I mean, we've never had a contestant come in at 105 pounds."
To hear more, tune in to "Rachael Ray" Thursday, Feb. 13. Check your local listings for time and channel.