Upkeep accounts for up to 70% of total energy (calories) spent by most people daily. Only essential organs, such as the heart, lungs, kidneys, nervous system, intestines, liver, lungs, sex organs, muscles, and skin, will consume energy in this condition. It’s the same as calculating how much fuel an idling automobile uses while stopped. The amount of energy required during rest under moderate conditions when the digestive system is at rest is known as the basal metabolic rate (BMR).
This term refers to the energy expended at rest in a moderate neutral environment. The Basal Metabolic Rate (BMR) calculator estimates your basal metabolic rate.