According to Wikipedia,
A MET (Metabolic Equivalent): The ratio of the work metabolic rate to the resting metabolic rate. One MET is defined as 1 kcal/kg/hour and is roughly equivalent to the energy cost of sitting quietly. … A 4 MET activity expends 4 times the energy used by the body at rest.
Why look at METs or calories burned during exercise?
METs will tell you how much energy you are using based accurately on body weight. If you add METs + Kcal/hour + Power = you get an accurate assessment of how much energy to replenish if you are trying to maintain weight and performance levels in an endurance event. If your goal is weight loss. These numbers give you a much more accurate and scientific basis for how much energy you are expending through activity.
METs are another way to account more accurately for weight management goals.
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