Each activity is connected to a number, the physical activity ratio. The physical activity level can also be estimated based on a list of the (physical) activities a person performs from day to day. The physical activity level is 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): PAL = T E E 24 h BMR In combination with the basal metabolic rate, it can be used to compute the amount of food energy a person needs to consume in order to maintain a particular lifestyle. Or whether you want your height to be displayed in feet/inches or centimeters.The physical activity level (PAL) is a way to express a person's daily physical activity as a number, and is used to estimate a person's total energy expenditure. You can choose whether you want your weight to be displayed in pounds, kilograms, or stones. Under Units, you will see that it is possible to use a whole lot of different units, some of which you may not have heard of.
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