Rating Perceived Exertion in Occupational Therapy BORG Rating of Perceived Exertion (RPE) 6 7 Very, Very Light 8 9 Very Light 10 11 Fairly Light 12 13 Somewhat Hard 14 15 Hard 16 17 Very Hard 18 19 Very, Very Hard 20   Revised RPE (1-10) Scale 0 Rest 1 Really Easy 2 Easy 3 Moderate 4 Sort of Hard 5 Hard 6 7 Really hard 8 9 Really, Really, Hard 10 Maximal: Just like my hardest race