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Resting Metabolic Rate (RMR) Equation:
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Resting Metabolic Rate (RMR) represents the number of calories your body burns at rest to maintain basic physiological functions such as breathing, circulation, and cell production. It accounts for the majority of your total daily energy expenditure.
The calculator uses the RMR equation:
Where:
Explanation: This equation provides an estimate of the calories your body needs at complete rest, taking into account your body composition, size, and gender differences.
Details: Knowing your RMR is essential for creating effective nutrition plans, whether for weight loss, weight maintenance, or weight gain. It serves as the foundation for determining your total daily energy needs.
Tips: Enter your weight in kilograms, height in centimeters, age in years, and select your gender. All values must be valid (weight > 0, height > 0, age between 1-120).
Q1: What's the difference between RMR and BMR?
A: While often used interchangeably, RMR (Resting Metabolic Rate) is typically measured under less restrictive conditions than BMR (Basal Metabolic Rate), making RMR slightly higher and more practical for everyday use.
Q2: How accurate is this RMR calculation?
A: This equation provides a good estimate for most people, but individual variations in muscle mass, body composition, and other factors can affect actual metabolic rate.
Q3: When should I measure my weight for this calculation?
A: For most accurate results, measure your weight in the morning after using the bathroom and before eating or drinking.
Q4: Does muscle mass affect RMR?
A: Yes, muscle tissue burns more calories at rest than fat tissue. Individuals with higher muscle mass typically have higher RMR values.
Q5: How often does RMR change?
A: RMR decreases with age (about 1-2% per decade after age 20) and changes with alterations in body composition, weight loss/gain, and fitness level.