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BMR (Basal Metabolic Rate)

The calories burned at complete rest to maintain basic body functions.

Basal metabolic rate (BMR) is the energy expended at complete rest for essential functions: breathing, circulation, cell production, and maintaining body temperature. BMR accounts for 60-75% of total daily energy expenditure. It is influenced by body composition, age, sex, and genetics. More muscle mass increases BMR.

Examples

  • Measured lying down, complete rest
  • 1500-2000 kcal/day typical
  • Higher with more muscle mass

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