About Careers Internship MedBlogs Contact us

Resting Metabolic Rate - Metabolic Rate

Last Updated on Oct 13, 2020
Font : A-A+

Metabolic Rate

Resting Metabolic Rate (RMR) and Basal Metabolic Rate (BMR) are the measures of resting energy expenditure in our body. Resting metabolic rate refers to the amount of energy used by the body in a given period of time when the body is in an inactive state. This energy is merely used to maintain the basic body functions like keeping heart beating, lungs breathing, and maintaining a normal body temperature. RMR measurements are usually taken after an overnight sleep.


Factors Affecting Metabolic Rate

Body functions are maintained by constant amount of energy expenditure. Factors like age, gender, height, weight, activity, race and others such as climate, smoking, and nutrient intake effect energy expenditure of our body and this in turn affect resting metabolic rate. When we skip meals, our metabolism decreases as the body burns fewer calories and stores excess fat resulting in weight gain. Therefore, it is very important to have small meals at regular intervals to maintain a stable metabolic rate.

Lean muscle mass burns more calories, and a high percentage of lean body weight results in a higher metabolic rate. Men are high on lean muscle mass and as a result have higher RMR than women. Tall people have more active metabolism and require higher calories. People born with a family history of slow metabolism have a higher tendency to gain weight. Adequate sleep is important to mobilize the carbohydrates and improve upon the calorie burning. A tired body has lower metabolic rate than a relaxed body.

Exercise and activity also raise our RMR from 100 to even upto 3000 calories per day.

Energy Balance = Energy Expended (exercise/activity) – Energy Intake (calories)

Our body requires a basic amount of energy to function every day, even when we’re sleeping. To perform body functions, our body needs energy in form of calories. Our resting metabolic rate is number of calories our body needs to just exist. Amount of energy expended when our body is in state of rest to sustain body functions is almost 70% to 75% of daily energy expenditure. Our daily activities account for about 20-30% of energy expenditure and the digestion process solely accounts for about 10% of daily energy expenditure.


Volume of our fat-free muscular mass is best predictor of RMR. RMR decreases with age. RMR normally ranges from 1,200 to 2,000 kcal/day (from 1,400-1,600 kcal/day in most people). Heavier people have higher RMR because they have more mass to support. Each pound of muscle burns to produce 6-7 kcal/day. Weight loss occurs only when our energy expenditure is greater than our caloric intake. RMR decreases on losing weight.

It is of prime importance to determine a person’s resting metabolic rate in order to design a weight loss program for that individual. Someone who is overweight has a higher RMR than a person who is lean. This is the reason why a person loses weight faster at the beginning of his weight losing regimen, gradually slowing down as he reaches his desired weight.

A person is not always at a state of rest, so the actual calories burned throughout the day will be higher than the RMR. The daily caloric intake should never go below the RMR to maintain a stable weight.

Going by individual body organs, our heart and kidneys have the highest resting metabolic rate (200 calories per pound), followed by brain (109 calories per pound) and liver (91 calories per pound). The contribution of skeletal muscle and fat to resting energy expenditure is smallest as compared to other organs.

Citations   close

Please use one of the following formats to cite this article in your essay, paper or report:

  • APA

    Dr. Shivani Nayar. (2020, October 13). Resting Metabolic Rate - Metabolic Rate. Medindia. Retrieved on Jul 02, 2022 from https://www.medindia.net/patients/patientinfo/resting-metabolic-rate-metabolic-rate.htm.

  • MLA

    Dr. Shivani Nayar. "Resting Metabolic Rate - Metabolic Rate". Medindia. Jul 02, 2022. <https://www.medindia.net/patients/patientinfo/resting-metabolic-rate-metabolic-rate.htm>.

  • Chicago

    Dr. Shivani Nayar. "Resting Metabolic Rate - Metabolic Rate". Medindia. https://www.medindia.net/patients/patientinfo/resting-metabolic-rate-metabolic-rate.htm. (accessed Jul 02, 2022).

  • Harvard

    Dr. Shivani Nayar. 2021. Resting Metabolic Rate - Metabolic Rate. Medindia, viewed Jul 02, 2022, https://www.medindia.net/patients/patientinfo/resting-metabolic-rate-metabolic-rate.htm.

Do you wish to consult a General Medicine Doctor / Internal Medicine Doctor for your problem? Ask your question

Dr. Roshen Sabiha
Dr. Roshen Sabiha
1 year experience
Smvmc , Mg area, Pondicherry
Dr. Suma G K
Dr. Suma G K
6 years experience
Dr. Firdos
Dr. Firdos
4 years experience
View All

Post a Comment

Comments should be on the topic and should not be abusive. The editorial team reserves the right to review and moderate the comments posted on the site.



Great artcle on home exercises and nice picture sharing. We must do exercises daily at home or at gym to lead active and healthy life and to prevent from major disease. I dropped my gym memberships last month. Now I'm a big fan of working out at home. I bought some equipment. It's considerably cheaper than going to a gym. A very helpful page in this case is: working out at home! I think the problem, like so many people have mentioned, is that it's hard to stay motivated. The best thing we can do is find someone to work out with! But nevertheless I'm very self motivated so working out has never been an issue. Good luck to everyone! :]

Recommended Reading
Health Topics A - Z

    What's New on Medindia
    Are Menopause Symptoms Troubling You?: Try these Options
    Vaccination  And Counter  Measures Against  Monkeypox
    Indian Railways Special Concession on Health Grounds
    View all

    Medindia Newsletters Subscribe to our Free Newsletters!
    Terms & Conditions and Privacy Policy.

    Most Popular on Medindia

    Diaphragmatic Hernia Loram (2 mg) (Lorazepam) Nutam (400mg) (Piracetam) Noscaphene (Noscapine) Blood Donation - Recipients Pregnancy Confirmation Calculator Iron Intake Calculator Drug - Food Interactions Selfie Addiction Calculator Drug Side Effects Calculator

    Disclaimer - All information and content on this site are for information and educational purposes only. The information should not be used for either diagnosis or treatment or both for any health related problem or disease. Always seek the advice of a qualified physician for medical diagnosis and treatment. Full Disclaimer

    © All Rights Reserved 1997 - 2022

    This site uses cookies to deliver our services. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use