RMR (Resting Metabolic Rate)

Definition

Calories your body burns at rest just to maintain basic functions—usually 60-75% of total daily energy expenditure, making it the real calorie-burning machine.

Example Usage

Her RMR is about 1,400 calories per day, so total daily expenditure is roughly 2,100 with activity.

Origin

Metabolic measurement from nutritional science, standardized in the 1920s

Fun Fact

Muscle tissue burns more calories at rest than fat tissue, which is why strength training indirectly aids weight loss.

Source: Nutritional Science and Metabolic Research

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