Translated, this means plan recovery days in your training week. Take periodic rest days. Recovery running is frequently interspersed between stressor units in a microcycle, while a rest day is usually less frequently applied. Like recovery runs, rest days are usually more liberally required as age increases. Use a heart rate monitor.
Many runners are guilty of training too fast on recovery runs and rest day runs.
Since we can't put a jockey on their backs and bridle in their mouth, the next best way to rein these runners in is by using a heart rate monitor. Setting a cap or target for recovery runs and rest day runs as described above and then sticking to it will help to assure that the racehorses will recover properly. Train with a slower partner on recovery runs or rest day runs. The rationale is the same as for using a heart rate monitor, but this method is more social and more frugal, albeit less precise and a bit more logistic-dependent. Take the watch off on recovery days.