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BMR (Basal Metabolic Rate): What It Is & How To Calculate It

Understanding your BMR is a critical first step in personalizing your nutrition and fitness plans, as it defines the "floor" of your caloric needs. How to Calculate Your BMR BMR (Basal Metabolic Rate): What It Is &

While the most accurate way to measure BMR is through clinical tests like indirect calorimetry (measuring oxygen and carbon dioxide exchange), most people use predictive mathematical formulas. 1. The Mifflin-St Jeor Equation The Mifflin-St Jeor Equation Currently considered the most

Currently considered the most accurate standard for the general population: Cleveland Clinic life-sustaining functions—such as breathing

Basal Metabolic Rate (BMR) is the minimum number of calories your body needs to perform essential, life-sustaining functions—such as breathing, circulation, and cell production—while at complete rest. Often called your "baseline metabolism," it accounts for approximately 60% to 75% of your total daily energy expenditure (TDEE).