Alison Sweeney

Although Biggest Loser host Ali Sweeney likes to be unbiased with the contestants, she tells us she can already foresee some fan favorites.

"Courtney auditioned for the show several times, but was too unhealthy," Sweeney says. "She lost almost 100 pounds by herself before she came back and ... to see her and get to know her — she's an amazing go-getter. We're all along on Courtney's ride."

Watch full episodes of the Biggest Loser in our Online Video Guide

In this video, Sweeney, who recently released her own weight-loss book called The Mommy Diet, talks about some of the standout contestants and why Season 11 "really shows the audience how difficult the Biggest Loser is."

The Biggest Loser: Couples airs Tuesdays at 8/7c on NBC.