BMR is the amount of energy lost when a body is at rest in a neutrally temperate environment. In this state, the energy released is used to run the vital organs only. These include the heart, lungs, Liver, Kidney, skin, the nervous system, muscles, sex organs, and brain. Loss of Lean Body Mass decreases BMR. Cardiovascular exercise helps to increase BMR. Since the Basal metabolic rate of an individual contributes maximum to energy expenditure, if the BMR is known it helps to lose or gain weight by preparing a more personalized diet plan.