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Basal Metabolic Rate (BMR)


Calculate your Basal Metabolic Rate (BMR) for free!


Your Basal Metabolic Rate (BMR) is the amount of energy expended daily if you are in a complete resting state all day. It is the minimum calories per day you need to consume in order to maintain your current weight without exercise, although physical activity levels, and energy expended in thermogenesis make it difficult to estimate the dietary consumption of any particular individual, and is usually measured under very restrictive circumstances when a person is awake. Your BMR depends on your gender, weigh, height, and age. It decreases when your age increases, which means the older you get the harder it becomes to stay slim (unless you exercise or maintain a healthy diet). Our calculator, like most you will find, should only be taken as an estimate and not as an accurate reading, since we cannot take into consideration the factors that can affect BMR nor can it (obviously) be calculated under the restrictions BMR normally needs to be calculated under.



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Factors That Can Affect BMR


A person's metabolism varies with their physical condition and activity. Certain drugs can also affect the BMR. Below are examples of factors that can alter your BMR.

  • weight training - can raise metabolism
  • antidepressants - can lower metabolism and may produce weight gain
  • stress, illness, and diabetes - can raise metabolism
  • hyperthyroidism - can raise metabolism
  • hypothyroidism - can lower metabolism and may produce weight gain
  • age - BMR increases with age
  • bulimia and anorexia - a decrease in food intake can lower the metabolic rate as the body tries to conserve energy

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