Bob Harper

Our external environment no longer seems to have any firm boundaries, any limits, or any positive cues about when to stop consuming anything. I mean, there is a reason that people get fat - it's easy and cheap to get high-calorie, tasty food.

When I came out, when I was 17 years old, it was one of those things where I realized that there was going to be so many obstacles, but being gay doesn't mean being weak.

For me, working out is a form of therapy. It's cathartic for me; it's a good stress reliever. I know that when I go to the gym I am taking care of myself, and I know I'll feel so much better afterwards.

I found that people like rules, and I love to tell people what to do. It's not rocket science when it comes to weight loss. It's about eating a little less and moving a little bit more.

If you want to be right-sized in body, you've got to get rid of the supersize way of life.

When I was first introduced to CrossFit, I found it to be the hardest workout that I'd ever done. It wiped the floor with me, and I fell in love with it immediately. The results that I have seen in my strength and physicality have been unparalleled to any other things I have ever done in my more than 20 years in the fitness business.

You can't be a parent and say, 'I need you to be more active and I need you to eat right,' when you're still choosing to have poor eating habits.

Whether you want to lose 20 pounds or 200, what the contestants on 'The Biggest Loser' have learned - and taught me - holds true: You've got to make a break. You've got to divorce yourself from the past and find a different way of living. And you can never go back.

Since I started CrossFit, I've read and heard about the critics talk about how unsafe it is, and my only response to that is any form of exercise can be unsafe if you don't have the proper coaching, education and guidance.

I believe in the power of the human spirit.

Even though you really don't feel like you're motivated to go to the gym, remember how good you felt after the last time you went. Keep that in the forefront of your brain.

It just kills me when people buy a dog when there are dogs in shelters. I still get emotional when I think of Karl sitting in that shelter. I wasn't looking. I didn't even think I had time for a dog, and then I met this little one and he needed help. It's been so amazing to see him transform into a happy and confident companion.