# Energy consumption

Energy consumption is the amount of energy or power used.[1]

## Biology

In the body, energy consumption is part of energy homeostasis. It derived from food energy. Energy consumption in the body is a product of the basal metabolic rate and the physical activity level. The physical activity level are defined for a non-pregnant, non-lactating adult as that person's total energy expenditure (TEE) in a 24-hour period, divided by his or her basal metabolic rate (BMR):[2]

${\displaystyle {\text{PAL}}={\frac {\text{TEE/24h}}{\text{BMR}}}}$

Following table shows the energy requirement of the human body.[3]

Physical Activity Energy requirement

(Cal/hr.)

Sitting 25
standing 30
Writing 30
Car driving 60
Typing 75
Household work 80
Walking 130
Sexual intercourse 140
Cycling 150
Running 500
Swimming 600
Walking upstairs 800

## Demographics

Topics related to energy consumption in a demographic sense are: