RPE stands for Rating of Perceived Exertion, or in other words, how hard you feel that your body is exerting itself based on the parameters of the workout. This is a Self-Assessment, there is no right or wrong answer. At Lifetime Endurance, we predominantly use the RPE system, and this guide will help you understand it so you can complete workouts and self-report with confidence. RPE is such a strong system to build and assess workouts because it focuses solely on your body