Breaking Down Basal Metabolic Rate (BMR)

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How Does BMR Work In Cronometer?

You might’ve heard the term Basal Metabolic Rate, or BMR for short, and wondered what it is or why it’s applicable to your health goals. So, we’re here to give you the run down.

What Is Basal Metabolic Rate (BMR)?

Basal metabolic rate is the rate at which the body uses energy while at rest to keep vital functions going, such as breathing, nutrient processing, cell production, circulation and keeping warm.

What Determines BMR?

Your BMR is determined by a number of factors, including: sex, weight, height, age, ethnicity, weight history, body composition and genetic factors.

What Formula Does Cronometer Use To Calculate BMR?

We ask you some basic questions when you’re signing up for the app so we can tailor the settings and recommendations to your unique body! Then we take those stats and plug them into the Mifflin-St. Jeor equation to determine your basal metabolic rate.

Your age, weight, height and more can be changed any time by navigating to settings then profile in the app. 

What Is The Mifflin-St, Jeor Equation?

We’re glad you asked! Cronometer will do the math for you, but if you can find your own numbers with some quick math this way:

BMR (kcal / day) = 10 × weight (kg) + 6.25 × height (cm) – 5 × age (y) + s (kcal / day), where s is +5 for males and -161 for females.

For more details on BMR formulas, click here.

Does Your BMR Change With Body Composition Changes?

You bet! To increase your BMR, try to gain muscle. Resistance training can improve lean body mass composition and maintain fat mass reduction, therefore increasing BMR.

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