Serious athletes, stay-at-home parents, busy executives and most other mortals succumb to the effects of under-recovery from time to time. Under recovery is slightly different than overtraining. Most non-athletes would have a hard time achieving “textbook” overtraining syndrome since it’s difficult to achieve the high training volumes related to overtraining.
Under-recovery may be related to training volume, but often is a result of poor lifestyle and nutrition choices, which compete against the effects of an intense training program. Not surprisingly, the symptoms are very similar and stem from an excessive level of stress compared to the ability to recover from it.