The number is much smaller than previous research, which estimated metabolic ceilings as 10 times your BMR. And while extreme ...

How many calories you should eat a day depends on your age, sex, physical activity, and whether you are trying to maintain, gain, or lose weight.

The Fitbit calorie tracker feature can be useful when planning a diet or workout schedule. Here's how Fitbit calculates ...

Even the most elite endurance athletes can’t outrun biology. A new study finds that humans hit a metabolic ceiling at about 2.5 times their resting energy burn. When ultra-runners take on races that ...

Sherri Gordon, CLC is a certified professional life coach, author, and journalist covering health and wellness, social issues, parenting, and mental health. She also has a certificate of completion ...

Jillian Kubala, MS, is a registered dietitian based in Westhampton, NY. Jillian uses a unique and personalized approach to help her clients achieve optimal wellness through nutrition and lifestyle ...

Sara Moniuszko is a health and lifestyle reporter at CBSNews.com. Previously, she wrote for USA Today, where she was selected to help launch the newspaper's wellness vertical. She now covers breaking ...