RPE is a commonly used tool for programming, and has continued to grow in popularity with the rise of barbell training, barbell sports such as powerlifting, and the online coaching industry. It's a novel tool which uses the lifters' perception of their effort (RPE stands for rate of perceived exertion) on a given set, on any given day, to influence programming decisions. It's an innovative way to approach programming, and certainly convenient for online coaches that don't have the benefit of watching lifters perform in real time, but is it actually useful? Coach Robert and Coach Trent debate the merits of RPE, and discuss the related concept of autoregulation, in today's episode.   Usually RPE is assigned to a set and rep scheme, such as "perform a single at RPE 8," and the lifter will choose the load depending on their perceived exertion level. If the lifter is feeling fresh and full of energy, they will go heavier; on the other hand if they go into the workout fatigued and low energy, they will go lighter. In both cases, the perceived exertion is the same. This is a form of autoregulation, an important aspect of programming for advanced trainees in which the programming must adapt to the fatigue level of the trainee from workout to workout. Performance becomes more unpredictable the more advanced a trainee becomes, and autoregulation is important to avoid injuries and overtraining during periods of high fatigue, as well as take advantage of good days when energy is high and the loads are moving fast.   For a novice trainee, however, RPE and autoregulation can be a minefield. Novices by definition lack the experience to understand what their level of exertion is on any given set, relative to what their total capacity for exertion. The process of linear progression, in fact, retrains the mind about what is possible as the lifter continually tackles heavier and heavier weights, often well past the point they thought they could go. Even for intermediate trainees, using RPE prescriptively to determine working loads can result in undertraining, or trainees spinning their wheels, if their weight selection does not involve regular progressive overload.   So... is RPE bullshit? Not quite. It can be a useful tool for the right lifter, but that lifter is probably fairly advanced and has accumulated a lot of time under heavy weights. For most people training in the gym, who are novices or perhaps early intermediates, it's not a great way to approach programming. At least Coach Robert and Coach Trent don't recommend it.   RPE Chart -- Reactive Training Systems https://articles.reactivetrainingsystems.com/2017/12/05/how-to-use-rpe-in-your-training-correctly/   Mike Tuscherer Interview with Mark Rippetoe https://youtu.be/PTCFaEPBWJQ     Weights & Plates: https://weightsandplates.com Robert Santana on Instagram: @the_robert_santana   Trent Jones: @marmalade_cream https://www.jonesbarbellclub.com