Researchers have found the maximum number of calories the human body can burn in a day – around 7,000 to 8,000 for extreme ...

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

The metabolic ceiling represents the maximum number of calories that a body can actually burn. For humans, it is believed to ...

Scientists tracked 14 elite endurance athletes for a year and found a metabolic ceiling: no one sustained more than 2.5× ...

When athletes devote large amounts of energy to running or cycling, they unconsciously cut back on energy output elsewhere.

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

When ultra-runners lace up for races that stretch hundreds of miles and days, they're not merely testing their mental grit ...

A study of elite ultra-athletes shows that even under extreme training, energy use levels off at ~2.5 times basal metabolic ...

While ultramarathoners are capable of huge energy spurts, overall the athletes top out at 2.5 times the metabolic rate needed for basic body functions.

Don't be fooled by diets and workouts that claim to speed up metabolism, that's not how it works. Here's how metabolism is ...

Individual athletes ran an average of 4,000 miles over a year to help define the human body's limit for energy expenditure ...

FitBits track many statistics, including calories burned. Here's how a Fitbit calculates the calories you've burned, and how ...