"My number one beauty tip has always been sunscreen," Sweeney explained about her interest in the competition. "Naturally I want to protect my kids and give them good habits. I grew up with the Coppertone brand and the image of Little Miss Coppertone is so iconic. It's what I imagine when I think of fun in the sun."

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Read on for more on what she's looking for in the contest winner, how she keeps her family healthy, and Biggest Loser romances:

Her judging criteria. "For me, it's all about the spirit. You don't have to look like the original Coppertone girl. We want to see people from all walks of life and are just looking for that little girl that has that energy and outdoor enthusiasm."

How she keeps her kids healthy. "A lesson that I learned from The Biggest Loser that has been really helpful is a simple math equation. I've been known to reduce it to Lightning McQueen needing fuel for his car. It's important to have the healthy fuel that helps you run fast. So I tell them the vegetables are what that is. I try to have my kids understand the reasoning behind things. It's the old Popeye mentality: your vegetables help you grow muscles. We make fitness a family thing too. We do outdoor activities, go on hikes, go to the beach. We keep our kids moving and they can see that we also lead healthy lives."

On why romance blossoms on The Biggest Loser. "We have a bunch of great love stories! Normally in a romance you put your best foot forward but then over time you see who the other person really is. And then it either works out or not. But when they come to the campus, some of them are at their lowest points and they're baring their souls and weaknesses. There is something so honest and special about people who are willing to do that. They bond in such an intense way that carries them through. They make these friendships that will be there the rest of their lives. If you happen to meet someone and there is a spark, it started from such a sincere place of having seen each other at their worst. Then they build from there and go on this great journey together. I think that's such a healthy way to start a relationship."

On the past season's controversy. "Each season is unique because of the contestants that are part of it. This particular group of people came together and were a strong-willed group of people from day one. They had a very strong idea of what they wanted to happen and how they wanted it to go. So I think a lot of it came from that."

Her advice for weight loss strugglers. "The same advice that I take from myself. I'm in maintenance and I'm always looking for ways to clean up and make sure I'm staying healthy. But for those who have gone through extreme weight loss like our contestants, they need to reevaluate the balance. We want this to be a lifestyle change. We're not believers of a fad diet or crazy extremes. Every day, every meal, I make the choice that I want to be healthy. And it's something you have to balance out. Being at a birthday party is different than being at home and you just try to make the best choices you can. Be honest with yourself about those choices and if you make some bad ones, turn it around as soon as you can. Don't wait to start eating healthy a week from now or the next day. Start now."