Basal metabolic rate (BMR)

The rate of energy expenditure that occurs in the post-absorptive state, defined as the particular condition that prevails after an overnight fast (the subject not having consumed food for 12–14 hours) and resting comfortably, supine, awake, and motionless in a thermoneutral environment. This standardized metabolic state corresponds to the situation in which food and physical activity have minimal influence on metabolism.