Definition: MET or the standard metabolic equivalent is a unit used to estimate the amount of oxygen used by the body during physical activity.
1 MET = the energy (oxygen) used by the body at rest, while sitting quietly or reading a book, for example. The harder your body works during the activity, the more oxygen is consumed and the higher the MET level.
- Activity that burns 3 to 6 METs is considered moderate-intensity physical activity.
- Activity that burns > 6 METs is considered vigorous-intensity physical activity.
Moderate-intensity physical activity refers to a level of effort that:
- Causes an increase in breathing and/or heart rate
- Results in three to six metabolic equivalents (METs) of effort
- Burns 3.5 to 7 Calories per minute (kcal/min)

