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MET or Metabolic Equivalent for Task

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Updated February 25, 2013

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Definition:

MET stands for Metabolic Equivalent for Task. It is a unit used to compare the working metabolic rate (the amount of oxygen used by the body during physical activity) to the resting metabolic rate. It is a way to compare the amount of exertion required for different activities. At rest, the body uses one MET for basic functions such as breathing. Describing an activity using MET allows comparisons among people of different weight. Calorie expenditure varies with a person's body weight.

Moderate physical activity requires 3 to 6 METs. Vigorous or high-intensity physical activity requires more than 6 METs.

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