Getting comfortable with RPE

How running by effort rather than pace may help you out of a performance rut

Creator of the Borg RPE scale dies

The Swedish psychologist Dr. Gunnar Borg passed away at the age of 92 on February 2

What is RPE and how can you use it in training?

Using a simple and subjective measure, your rating of perceived exertion (RPE), could be as effective as heart rate or blood lactate monitoring