article seems to contradict it! What is the explanation?
The “worn-out syndrome” can be observed when a heavily sleep-deprived individual sleeps unusually long (above 13 hours). It is very difficult to persist in long-sleep routine as the sleep-regulating mechanism will quickly regulate the length of sleep to a more typical length. On one hand, the “worn-out” syndrome might seem to persist if the sleep period is wrongly adjusted to the circadian cycle (see the section on hypersomnia above); on the other hand, the “worn-out” observation is usually produced by those who cannot get enough sleep during the week and then sleep long on the weekend. In the latter case, follow-up observation is often impossible due to next week’s obligations. This deepens the wrong conviction that too much sleep is harmful. Healthy individuals cannot take “too much sleep”!
