Answer
The basal metabolic rate (BMR) of the average adult is about 2,000 kcal/day. This is adequate to support just active transport, muscle tone, brain activity, cardiac and respiratory activities, renal and liver functions and other essential physiological processes. A sedentary person may need just an additional 500 kcal/day to support the activities of his or her life-- that is a TMR of 2500 kcals/day. In contrast, a very (vigorously) active or hard-working person may need as many as 5,000 kcals/day.
The TMR rises under the following conditions-- pregnancy, anxiety, and fever --14% increase for every 1 degree rise in body temperature.
Work Step by Step
Total metabolic rate (TMR) rises after a meal, and declines with age It also decreases with weight loss and in emotional states like apathy and depression.
