<P> Metabolism comprises the processes that the body needs to function . Basal metabolic rate is the amount of energy per unit time that a person needs to keep the body functioning at rest . Some of those processes are breathing , blood circulation , controlling body temperature , cell growth , brain and nerve function , and contraction of muscles . Basal metabolic rate ( BMR ) affects the rate that a person burns calories and ultimately whether that individual maintains , gains , or loses weight . The basal metabolic rate accounts for about 60 to 75 % of the daily calorie expenditure by individuals . It is influenced by several factors . BMR typically declines by 1 -- 2 % per decade after age 20 , mostly due to loss of fat - free mass , although the variability between individuals is high . </P>
<P> Metabolism comprises the processes that the body needs to function . Basal metabolic rate is the amount of energy per unit time that a person needs to keep the body functioning at rest . Some of those processes are breathing , blood circulation , controlling body temperature , cell growth , brain and nerve function , and contraction of muscles . Basal metabolic rate ( BMR ) affects the rate that a person burns calories and ultimately whether that individual maintains , gains , or loses weight . The basal metabolic rate accounts for about 60 to 75 % of the daily calorie expenditure by individuals . It is influenced by several factors . BMR typically declines by 1 -- 2 % per decade after age 20 , mostly due to loss of fat - free mass , although the variability between individuals is high . </P>
the minimum number of calories needed for basal metabolism is
the minimum number of calories needed for basal metabolism is
Basal metabolic rate
Basal metabolic rate