“Sleeping in at the weekend is poison!” For years, quite a few “health (and unfortunately also sleep) experts” have been recommending, like a mantra, to maintain the same sleep rhythm at the weekend as during the week. Early to bed, early to rise, regardless of how the week has gone, because the body needs “rhythm”. Sounds logical, disciplined control, but it’s biological nonsense. In comparison, it would be like: The more you smoke, the more your body gets used to it and everything is fine.
Sleep is regeneration, and the body has a reason why it allocates sleep to a certain period of time.
A recent article in the Journal of Affective Disorders finally shows this clearly: People who sleep longer at the weekend have significantly fewer depressive symptoms. Point.
What the study is really about
The study looked at adolescents and young adults aged between 16 and 24 – precisely the phase of life in which sleep deprivation is the rule rather than the exception. School, training, studies, social obligations, screen time, early start times: Sleep is systematically shortened. School start times are partly responsible for poorer performance and later mental problems in young people, especially in these times of extreme mental stress.
The researchers made a comparison:
The central concept is called “Weekend Catch-Up Sleep” – in other words, additional sleep at the weekend to make up for a deficit. The result is clear and contrary to many textbook recommendations:
People who sleep in at the weekend are around 40 % less likely to experience depressive symptoms.
The bottom line: Sleep is not a moral concept
A common mistake: sleep is treated like a behavioral issue. “You just have to pull yourself together.” “The body gets used to it.” “Regularity is everything.” In other words: nature is too stupid, you just have to show it how to do it:
The body does not react pedagogically, but biologically.
If there is too little sleep during the week, which is almost always the case for teenagers and young adults, there is a real, measurable sleep deficit. This deficit does not disappear just because it is ignored, it seeks an outlet. The weekend is often the only time when the body gets the chance to readjust.
Does the study disprove the “equal rhythm myth”?
In short: yes, at least in its absoluteness.
The often quoted recommendation to keep to exactly the same rhythm at the weekend as during the week is based on a shortened logic:
The reality is more complex. The study shows: More sleep at the weekend is better than a lack of sleep with a perfect rhythm. The background to this is simply that “not sleeping in” means “not sleeping to the end”. Sleep cannot finish its work. And there is ZERO advantage if it cannot finish its work rhythmically, on the contrary.
What’s more, when sleep is shortened, it is not at the beginning but at the end, i.e. in phases of increased REM activity. These in turn are primarily responsible for mental regeneration. So if this phase is shortened, the regeneration time is also shortened, with the familiar consequences. Simple as it is.
The first seminar on chronotype justice in families
Social jet lag, a much-abused argument
Critics immediately throw in: “But social jet lag!” Yes, there is evidence that large differences between weekday and weekend sleep can put a strain on the circadian rhythm. That is correct in principle.
But what is often overlooked is this: Social jet lag is often not the cause, but the result of an incorrect weekly rhythm, and an incorrect weekly rhythm does not get better if you continue it at the weekend. If school or work force biologically unfavorable start times, jet lag occurs during the week – not at the weekend. Sleeping in is then not a provocation of the system, but the only time for a correct rhythm.
What many people also forget: Regular “5x no sleep in, 2x sleep in” is also a rhythm.
Sleeping in at the weekend – what does that mean for parents?
Now for the part that many may not like. Waking children and teenagers up early at the weekend is often counterproductive from a biological point of view. Especially during puberty, the chronotype shifts backwards. This is not a lifestyle problem, but a neurobiological one. If teenagers have to get up too early during the week, sleep debt accumulates. The weekend is often the only time when this can be partially reduced.
Banning sleeping in at the weekend therefore means preventing regeneration.
This does not increase discipline, but:
It simply shows that our time structures do not fit our biology, and we do not correct this by making this “not fitting” a permanent condition. As long as early school and work schedules cause chronic sleep deprivation, the weekend is not a luxury, but a lifeline in terms of sleep.
Conclusion – What you should really learn from the study
The study clearly shows that sleeping in at the weekend reduces depressive symptoms, contradicting the general recommendation to maintain a weekly rhythm at all costs.
For adults, this means taking an honest look at whether their own weekly rhythm is healthy at all. For parents, it means not depriving children of a good night’s sleep on principle, but understanding why they need it.
Everything else is (perhaps) well-intentioned, but biology is not interested in good intentions
