On the other hand, older individuals generally have lower calorie needs due to decreased lean body mass and changes in hormones that play a role in metabolism. All of these individual factors play a role in how much energy your body uses at rest.įor example, men tend to have more lean muscle mass than women, which raises their basal metabolic rate. Your BMR will be based on your height, weight, age, and gender. Since it is not possible for the majority of people to do indirect caloremitry, a number of equations have been created to try to provide the best estimate of basal metabolic rate. However, there are limitations to indirect calorimetry, such as cost and accessibility, that make it not possible for most people to do. These labs measure the heat coming off of your body to determine the number of calories that it burns at rest. The only way to determine your true BMR would be to go to a lab and have your metabolic rate measured by gas analysis through either direct or indirect calorimetry. This represents the energy, or calories, that your body requires to function when completely at rest and includes all of your normal bodily functions, such as your respiration, your heart rate, blood flow, and brain activity.īasically, all of the vital functions that keep you alive!Įveryone will have a different BMR since this is dependent on your height, weight, age, and gender.
Your basal metabolic rate (BMR) is your resting metabolism.
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