Sleep Science: Insomnia Causes and Treatment
Why Trying Harder to Sleep Is Exactly What's Keeping You Awake
The most effective treatment for chronic insomnia asks you to spend less time in bed — and it works better than sleeping pills.
The Idea
Insomnia is rarely just a sleep problem. More precisely, it is a problem of arousal — your nervous system has learned, often through a perfectly logical chain of events, to treat your bed as a place of threat rather than rest. The original cause of the bad sleep (stress, illness, a newborn, a deadline) may have long since passed. What remains is the conditioned response: a brain that fires up the moment your head hits the pillow, scanning for danger, monitoring the clock, calculating how terrible tomorrow will be if you don't fall asleep in the next twenty minutes. This is why the conventional advice — try to relax, go to bed earlier, don't think about it — so reliably backfires. Sleep is an involuntary process. Trying to force it is like trying to will your pupils to dilate. The effort itself is the problem. Every anxious hour you spend lying awake trains your brain to associate the bedroom with wakefulness and dread. The gold-standard treatment, Cognitive Behavioural Therapy for Insomnia (CBT-I), targets this learned association directly. It doesn't sedate you into sleep — it dismantles the mental architecture that's preventing it. Two of its core tools are sleep restriction (temporarily compressing the time you spend in bed to rebuild sleep pressure) and stimulus control (getting out of bed when you can't sleep, so the bedroom reassociates with rest). Both feel counterintuitive, even alarming. Both have decades of evidence behind them.
In the World
In the early 1980s, a psychologist named Arthur Spielman at the City College of New York began noticing something curious in his insomnia patients. Many had started sleeping badly for an entirely understandable reason — grief, pain, job loss. But then the original cause resolved and the insomnia didn't. They were stuck. Spielman developed what became known as the 3-P model: Predisposing factors (genetic or biological tendencies toward lighter sleep), Precipitating events (the trigger), and Perpetuating behaviours (the habits that keep the insomnia alive long after the trigger has gone). That third category is where most chronic insomnia lives — and where most people never look. They're still treating the precipitating event, months or years after it no longer matters. His sleep restriction protocol sounds brutal when you first hear it: if you're spending nine hours in bed but only sleeping five, you should initially limit yourself to five hours in bed. The resulting sleep deprivation builds what researchers call sleep pressure — the homeostatic drive to sleep that most chronic insomniacs have inadvertently suppressed by spending too many anxious, half-awake hours in bed. Within a few weeks, most patients extend their window gradually and find themselves sleeping more efficiently than they have in years. Large clinical trials now consistently show that CBT-I outperforms sleep medication over the long term, with none of the dependency or cognitive side effects. The American College of Physicians has recommended it as the first-line treatment for chronic insomnia since 2016. Yet most people who struggle with sleep have never heard of it.
Why It Matters
Understanding the perpetuating loop changes how you relate to a bad night entirely. When you know that anxious clock-watching is training your brain to be more wakeful, you can catch yourself in the act — not to force yourself to relax, but to choose a different response. Getting up, doing something quiet and non-stimulating, and returning to bed only when sleepy isn't defeat. It's actually the therapeutic move. It also means you can stop pathologising the occasional rough night. One bad night, or even three in a row, doesn't create chronic insomnia. What creates it is the anxious meaning we attach to those nights and the compensatory behaviours we adopt — the early bedtimes, the long lie-ins, the avoidance of exercise in case it makes things worse. The insomnia loop is largely self-constructed, which is uncomfortable to hear but is also genuinely good news: it means it can be deconstructed. If you've been struggling with sleep and feel like you've tried everything, the answer may not be a new supplement or a different mattress. It may be thinking about sleep in an entirely different way.
A Question to Ponder
Is there something you believe helps your sleep that might actually be teaching your brain to stay alert?
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