What does (1) MET equal to?

One MET, or Metabolic Equivalent of Task, is a standard unit used to estimate the energy expenditure of physical activities in relation to resting metabolism. It is defined as the amount of oxygen consumed while sitting at rest, and it typically equates to approximately 3.5 milliliters of oxygen per kilogram of body weight per minute. This means that when a person is at rest, their metabolic rate can be expressed as 1 MET.

Understanding METs is essential for personal trainers and fitness professionals as it provides a reference point for comparing the intensity of various physical activities. For instance, a moderate-intensity exercise might be expressed as 3 METs, meaning it expends three times the energy that a person would burn at rest.

The other choices relate to different aspects of metabolism and energy expenditure but do not accurately define what 1 MET specifically represents. MET is solely focused on the resting metabolic rate, making choice A the most precise answer.