ANTM's celebrity judge Paulina Porizkova stays fit by doing karate, and says her stint on Dancing With the Stars got her in the best shape ever.

The Biggest Loser's Bob went ballistic this week on the Gray team's Joelle. Find out how many times he dropped the f-bomb. Do you think his "motivational" method works or does his treadmill-side manner need work?

One fit and healthy celeb claims food is the love of her life. Find out who here.

Healthy habits change more than just your body, they can change your life too. Here are five to get you started.

Loving seeing Eric Stoltz on Grey's Anatomy? Fitz asked Eric how he gets fit for a movie role (hint: eat less, exercise more, and skip the starchy carbs).

Looking for some great low-cal snacks that will give you a boost without breaking your diet? Jacki has some great suggestions ... all under 175 calories.

Think you're doing your body good by choosing ground turkey? Think again. Jacki tells us why label reading is a good idea when choosing meat.

Funny lady Carol Burnett shares her fitness secrets with Fitz -- and gets in a few jokes at the same time!

We're halfway through the America Takes it Off: Shrink a Size challenge and you've lost another 44 pounds! Two weeks to go ... we know you'll reach our goal of 250.

Have a great week, everyone! And if you're celebrating the inauguration, here are some healthy chili recipes -- it's Barack Obama's favorite homemade meal, you know!