Home More. When we exercise, we naturally think about what a particular session, and more specifically our body, feels like as we decide to push ourselves a little harder or maintain our current pace. A: The RPE scale is a numeric scale ranging from 6 to 20 , with 6 being very light exertion and 20 being maximal exertion. However, it is now used for a broad range of situations. Duration is the amount of time in minutes it takes to complete a particular workout or set of exercises.
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