In sport psychology, the perceived exertion of an exercise is how hard it seems to the person doing it. Perceived exertion is often rated on the Borg scale of 6 to 20, where 6 is complete rest and 20 is the maximum effort that an individual can sustain for any period of time.
The concept of perceived exertion in sport psychology relates to the subjective experience of effort, often quantified using a scale ranging from 6 (minimal effort) to 20 (maximal effort).