Recovery is one of the most important aspects of running, and one that runners often struggle with. One helpful way to monitor your recovery is to grade your workouts. After completing each run, give it a grade in your training log: for example, great, good, fair, or bad. Three consecutive bad days indicate that you aren't getting enough recovery to perform adequately in workouts and should rest or take it easy for a day or two. A full week without any good or great workouts indicates the same.