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It's been a busy week for Bob -- what with the start of the newest season of "The Biggest Loser" and his teaming up with Dr. Oz to help launch the "Highway to Health Bus," (a challenge to Americans to add 10 years to your life in 60 days) -- but he managed to find time to chat with That's Fit about the latest season of the show, his favorite foods and a chance to win a personal training session with our favorite (male) trainer from "The Biggest Loser."

That's Fit: This season is about second chances and a previous contestant is returning. What advice to you have for people who have lost weight in the past only to gain it back?

Bob Harper: I try to tell people not to be so discouraged when you get yourself in that situation. I've worked with so many people who have lost hundreds of pounds and then put it back on and what I try to get people to focus on is why they need to lose weight in the first place and to get healthy the goal should be to learn better habits and have new tools while you're losing the weight so whenever you have reached your "goal" you have a new lifestyle. So many people are thinking, "Once I lose the weight I can go back to the way it used to be," and that's just not the case.

That's Fit: If you could only eat one days worth of meals for the rest of your life, what would you make sure to have for breakfast lunch and dinner?

BH: That's easy. One of the main things I tell people is that you've got to get your fruits, your vegetables and your grains every day. Every morning I'm going to have my oatmeal; I'm going to have my fruits. For lunch I have brown rice and black beans. I always have Melba toast. Melba toast seems like an old lady thing to eat but I'm getting my servings of grain from that. Then dinner is always going be plenty of vegetables because I'm a vegetarian. That's how I eat every single day. The low-carb craze is something that has been driving me nuts for the past couple of years. People think they're going to cut out a major food group to lose weight and I think that's asinine. I really do. I've seen people that lose so much weight on these all protein diets and I've seen them put it all back on. Because it's not realistic. [You've got to] make sure it's something that's going to be able to last a lifetime. You need complex carbohydrates for a fuel source to be able to have the fuel to work out as hard as I would want you to work out and to burn you're optimum amount of calories.

That's Fit: Speaking of working out, you've partnered with Grains Food Foundation in a contest where the prize is a chance to win a 90-minute personal session with you. What is a typical training session with you like?

BH: Yes. [From September 12 to October 27, 2009] You can go gowiththegrain.org and you can sign up to win a 90-minute personal training session with me and let me tell you it'll give you a heart attack. People who've seen me on the show, know there's so much yelling and screaming and jumping, but a personal training session with me is not going to be as bloody as you see on the show -- but still as effective. I'm going to expect you to do what I ask you to do.

See what Allison Sweeney had to say about season 8 of "The Biggest Loser."