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✦  THE PRACTICE
The day after a bad night
Two thoughts make it worse than it is, and both of them are on a clinical questionnaire.
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THE ORDINARY VERSION
I slept badly on Sunday and then spent most of Monday telling people about it, which I suspect did more to the day than the night had.
By the afternoon I had explained myself to enough people that being tired had become the main thing about me, and I am not sure I was ever that tired.
Everybody has these nights. What usually follows them is advice about repair, as though something had broken and you were now behind on the mending. This is the ordinary version, where the night was a night and the day is only a day.
 
The two thoughts
There is a questionnaire clinicians use to measure what people believe about their own sleep, and two of the items on it are the sentences almost everybody says out loud the morning after a bad one.
The first is that without enough sleep you will not manage the day ahead. The second is that you have to make up what you lost.
Both come to you feeling like plain facts rather than beliefs, which is precisely why somebody thought to put them on a questionnaire. They are on it because they predict how badly a person sleeps, not because they describe how the body works.
I am not going to tell you they are false, because on any given morning one of them might turn out to be true for you. I would only point out that you have never once tested them, and today you could leave them where they are and see what happens.
 
Why trying makes it worse
Falling asleep is not something you do. It happens to you, the way blushing does, and the intention to bring it about is one of the few things reliably shown to hold it off.
Researchers describe this as a problem of attention, intention and effort, where the deliberate intention to sleep gets in the way of the automatic process that would otherwise carry you there. It is settled enough that somebody built a scale to measure how hard a person is trying, and work in the Journal of Sleep Research has examined how that effort sits alongside beliefs and evening arousal in people with insomnia.
Which is why the morning after matters more than it looks. Everything you do to make up the loss teaches you that sleep is a thing to be managed, and the managing is what keeps you awake. Going to bed at nine with the lights off and a determined expression is the surest way to still be there at ten.
The kindest thing you can do for tonight is to have an unremarkable day.
“ Falling asleep is not something you do.
 
What the day actually asks
Get up when you were going to get up. The morning is the anchor, and moving it to claim back an hour is how one bad night turns into a bad fortnight.
Go to bed at the usual time as well, not earlier. If you want to sit down for a short rest in the early afternoon then do, though keep it well away from the evening, where it borrows against the night to come.
Eat and move about as you otherwise would. Coffee is fine, and it is worth noticing that the second and third cups are usually about the story rather than the tiredness.
And say less about it. Not to be stoical, but because describing yourself as wrecked all morning is a way of practising it. The version of you who slept badly and has mentioned it to nine people is worse company than the version who has not, and the difference between them is not the sleep.
 
The thing you will want to buy
Somewhere around eleven, the urge turns up to fix this with a purchase, and magnesium is usually the first candidate. So here is the honest picture.
A meta analysis pooled three randomised trials covering a hundred and fifty one older adults with insomnia and found people fell asleep about seventeen minutes faster on magnesium than on placebo. Total sleep time went up by roughly sixteen minutes, though that second result was not statistically significant.
The part that rarely travels alongside those numbers is this: all three trials carried a moderate to high risk of bias, the evidence came out graded low to very low, and the authors’ own conclusion was that the literature is not good enough for a doctor to make a well informed recommendation from it.
Wider reviews point the same mixed way. One counted five of eight sleep studies showing improvement, two showing none and one mixed, across trials using different doses, different forms and different durations. Where reviewers do find something, they tend to attach a condition to it, since the benefit looks likeliest in people whose magnesium was low to begin with.
So it probably will not hurt you, and it might do a little. The catch is not pharmacological. Buying something is an act of management, and management is what this whole piece is arguing against. If the tablet becomes one more item you must get right or the night is ruined, it has cost you more than seventeen minutes.
 
When it is not an ordinary bad night
Everything above is written for the occasional bad night, which is a normal event in a normal life.
If the bad nights are most nights, and have been for a month or more, that is persistent insomnia, and it is a different thing with a different answer. There is a specific structured treatment for it, usually a course of sessions rather than tablets, and a doctor is the route to it. It is worth asking for, and worth asking sooner than most people do.
 
Tonight
You will probably sleep deeply without doing anything at all, because the pressure to sleep builds through a day spent awake and it does not need your help.
That is the part nobody mentions, and it is the part that makes today survivable.
 
Common questions
Can I take magnesium before bed?
You can. The best available evidence puts the effect at around seventeen minutes faster to sleep in older adults with insomnia, from trials the reviewers themselves graded low to very low quality, with the benefit likeliest in people who were low in magnesium anyway. Modest, uncertain, unlikely to hurt.
Should I nap?
Early afternoon and short is fine. Late afternoon or long and you are spending tonight’s sleep in advance, which is how one bad night becomes several.
Should I go to bed early to catch up?
No. Keep the usual time. Going early gives you more hours lying awake, which is the experience that teaches your body that bed is a place where you fail at something.
How many hours should I be getting anyway?
The American Academy of Sleep Medicine and the Sleep Research Society put fifteen experts on this question for a year and settled on seven or more for adults aged eighteen to sixty. They deliberately set no upper limit, and they allowed that some people need more and some less, so treat it as a floor rather than a target.
✦  SOURCES
Dysfunctional Beliefs and Attitudes about Sleep scale
ncbi.nlm.nih.gov/pmc/articles/PMC12713861/
Espie and colleagues, attention intention effort model
sciencedirect.com/science/article/abs/pii/S0005791619302381
Hertenstein and colleagues, Journal of Sleep Research, 2015
onlinelibrary.wiley.com/doi/abs/10.1111/jsr.12293
Mah and Pitre, BMC Complementary Medicine and Therapies, 2021
link.springer.com/article/10.1186/s12906-021-03297-z
Systematic review of magnesium for anxiety and sleep, 2024
pubmed.ncbi.nlm.nih.gov/38817505/
AASM and Sleep Research Society sleep duration consensus, 2015
aasm.org/seven-or-more-hours-of-sleep-per-night-a-health-necessity-for-adults/
Which of those two thoughts is yours? Tell me
 
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Dream it. Sign it. Live it.
 
 

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