What is a 'basal metabolic rate'?

What is a 'basal metabolic rate'?
Basal metabolic rate (BMR) is the amount of energy expended while at rest within a neutrally tepid environment, in the post-absorptive state (meaning that the digestive system is unused, which requires about twelve hours of fast in humans). The release of heartiness in this state is sufficient simply for the functioning of the vital organs, such as the heart, lungs, brain and the rest of the anxious system, liver, kidneys, sex organs, muscles and skin. BMR decreases near age and with the loss of lean body mass. Increased cardiovascular exercise and muscle mass can increase BMR. Illness, previously consumed food and beverages, environmental warmth, and stress levels can affect one's overall dynamism expenditure, and can affect one's BMR as revealed by gas analysis. It is measured when the person is at complete rest, but awake. An accurate BMR height requires that the person's sympathetic nervous system is not stimulated. Basal metabolic rate is measured underneath very restrictive circumstances. A more adjectives and closely related measurement, used beneath less strict conditions, is resting metabolic rate (RMR).[1]
BMR and RMR are measured by gas analysis through any direct or indirect calorimetry, though a rough estimation can be acquired through an equation using age, sex, altitude, and weight. Studies of dash metabolism using both methods provide convincing evidence for the validity of the respiratory quotient (R.Q.), which measures the inherent composition and utilization of carbohydrates, fat and proteins as they are converted to energy substrate unit that can be used by the body as energy.
Your basal metabolic rate is pretty much the rate at which your body generally burns to remain functional.