Unpacking Body Composition Lingo
Basal Metabolic Rate (BMR) is the total amount of calories needed to keep your body functioning.
Body processes like breathing, cell production, pumping blood, and maintaining body temperature all burn calories. This means that even when you sit perfectly still, you still use plenty of calories keeping your body in good working order.
To define BMR:
“Basal” more or less means “basic,” so you can think of BMR as the number of calories needed for basic daily functions.
Your sex, age, weight, and height will all affect the number of calories you need, which is why they are variables in our equation above.
The taller you are, or the more you weigh, the higher your BMR will be.
There is simply more of you to fuel: more blood to pump, more cells to produce, more body mass to transport and manage.
Your age will also factor in: the older you get the lower your BMR will be.
Roughly two-thirds of the calories you need each day go into keeping your body running.
The other third? That goes into powering your motion.
Credit:
**https://www.nerdfitness.com/blog/how-many-calories-should-i-eat-every-day-a-look-at-total-daily-energy-expenditure-tdee/#more-3515010