Basal Metabolic Rate (BMR) refers to the minimum amount of energy or calories that an individual's body needs to maintain basic physiological functions while at rest. These functions include breathing, circulation, cell production, nutrient processing, and maintaining body temperature. BMR typically accounts for the largest portion of an individual's total energy expenditure, usually around 60-70%.
Factors that influence BMR include age, gender, weight, height, body composition (muscle-to-fat ratio), genetics, and hormonal factors. Generally, BMR is higher in individuals with more lean body mass (muscle) because muscle tissue requires more energy to maintain than fat tissue.
BMR is often used as a baseline to calculate total daily energy expenditure (TDEE), which includes additional calories burned through physical activity and digestion. Knowing one's BMR can be helpful for designing personalized nutrition and fitness plans aimed at weight management or improving overall health.
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