Activity Level

A second process that requires energy is physical activity.The energy a person requires to support his physical activity is calculated as a percentage of his resting metabolism needs.For example, an inactive person who sits most of the day and is on his feet or moving slowly less than a total of two hours will need approximately 30 percent of his resting metabolism expenditure to support his activity level.


People who walk or stand for two to four hours during an average day but do no strenuous activity need 50 percent of their resting metabolism for activity, while those who engage in four or more hours of physical activity each day require 75 percent.