Stephanie Romiszewski: Sleep physiologist who worked with NASA and Harvard Medical School; treats insomnia and sleep disorders using cognitive behavioral therapy for insomnia (CBT-I).
What this episode covers
Stephanie Romiszewski argues that society has become dangerously obsessed with perfect sleep, and that the anxiety and fear around poor sleep is what perpetuates most long-term insomnia rather than the original trigger. She debunks common myths: the rigid need for exactly 8 hours, the simplistic notion of sleep debt, fixed bedtimes, lying in to compensate, and the value of the snooze button. Her core method, CBT-I, uses sleep restriction (limiting time in bed) to rebuild a strong sleep drive, paired with re-education and mindset work. She stresses you can never force yourself to sleep but you can dictate when you don't, and that the wake-up time matters more than bedtime. The biggest fix is to worry less and treat sleep as one pillar of health rather than blaming it for everything.
Also referenced (named, not recommended)
Apple Watch
Apple
“you speak about the tech that we have now, Apple watches, all these little, you know, smart devices that are telling us how many hours a day we're sleeping”— Steven Bartlett
Big reveals from this episode
- The fear of bad things happening from poor sleep is what she actually treats, not catastrophic illness from sleeplessness.
- Dictating an exact bedtime every night is, in her view, the worst sleep advice and can worsen insomnia.
- You do not need exactly 7-8 hours every night; think over a month, with consistency about 80% of the time.
- CBT-I deprives people of sleep opportunity (restricting time in bed), not sleep itself, to rebuild sleep drive.
- Treating insomnia separately from depression reduces relapse of depression because sleep is a perpetuating factor.
- Undergraduate medical degrees teach a median of only about an hour and a half on sleep.
- She spends most of her time not teaching people to sleep but resolving the mindset and fear around it.
Worth remembering
- Science still does not know exactly why we sleep, only what happens when we don't.
- We are not made to think rationally in the middle of the night, which makes nighttime wakefulness feel lonely and anxious.
- The body can recover from sleep deprivation by increasing the specific sleep stage it missed most, rather than reclaiming hours one-for-one.
- Fatigue and sleepiness are different; sleepiness is specifically being able to shut your eyes and fall asleep within minutes.
- Research shows the snooze button provides no benefit; you cannot reach a beneficial sleep phase in those short windows.
- Caffeine sensitivity is genetic, so no universal cutoff time applies to everyone.
- We remember dreams mainly when interrupted out of REM sleep, a light and very active stage of sleep.
- Eating late forces the body to both metabolize and sleep, and it dislikes doing both, compromising one.
- So-called oversleeping is usually a sign of poor-quality sleep, sometimes from a disorder like sleep apnea.
- About 10% of insomniacs are never seen by clinicians because they simply don't perceive their pattern as a problem.