RPE in the most basic of terms is a way to self-monitor to determine how much effort you’re putting in while exercising, says Meg Takacs, CPT, an RRCA-certified running coach and CrossFit trainer.

Today, let's dive into a key concept that will help you connect more deeply with your workouts and optimize your results in an intuitive way: the Rate of Perceived Exertion (RPE). Does it ring a bell?