During my 20s I developed a severe insomnia, probably due to not knowing how to handle stress. It was so bad that I had to go to the ER because I haven't had any sleep in days and didn't know what else to do. They gave me ambien and it helped at the time, but I knew that it was not something to take long term. I then started to experiment with various methods to help me fall asleep and sleep hygene such as hot/cold showers, warm baths, relaxing exercises and meditation, lowering the room temperature, removing sources of light (especially those blue LEDs). In my 40s now and am happy to report that I no longer have any insomniac episodes and I rarely have a hard time falling asleep. Out of all the techniques I found that forcefully yawning for a couple of minutes is the most efficent way for me to induce sleep.
I'm pretty sure at this point I have familial advanced sleep phase syndrome of an unknown genetic etiology [1].
Wake up stupid early in the morning, get drowsy very early in the evenings etc. For a long time due to social pressure/habit I'd just power through the evening drowsiness. That lead to me only being able to sleep six hours or so (due to waking up stupid early), which over time lead to a substantial sleep debt.
Going to bed early helps a lot, but over time it seems like I easily start drifting earlier and earlier. I've recently had some success stabilizing my rhythm using sublingual melatonin when I first waken at 2-3am. Let's me get a couple extra hours of additional quality sleep which is a lifesaver. Wears off quick enough that by 9am or so it's basically out of my system.
I've actually been tinkering/hacking the last year or so on sleep tracking wearables. Initially focused on EEG/HRV monitoring but I'm taking a very modular approach and ultimately want to build a full set of sensors/effectors/etc.
I've recently been experimenting a lot with skin temperature gradients, turns out in the lead up to sleep it's not just blood flow in the brain that is altered [2].
I wonder how much of sleep research is affected by the difference in sleep quality between your own bed and a lab. Even if you're on vacation and the hotel bed is of exceptional quality, your brain knows that it's in a different environment and would naturally be on partial alert, at least for the first couple of nights.
Now imagine sleeping in a lab setting, knowing that your sleep data is being measured. Intellectually you know that you're not at any risk but there must be some difference in the architecture of your sleep.
Taking melatonin has been mentioned several times in different threads here, and I just wanted to add my experience...
I find that taking the minimal amount make a big difference here, and it's about 3 micro-grams (not milli-grams) for me. The trick is to get some liquid melatonin drops. There is a brand that has 3 milligrams per 30 drops as a recommended dosage, so I just take 3 or so drops and let them dissolve on my tongue. Using liquid drops this way, there is less of a sleep hangover, and It workes faster that way, too.
I think I read about 3 micrograms as more appropriate for most people on lesswrong, but it might have been somewhere else. It's working really well for me, with frequent breaks from it, for five or more years.
Melatonin has helped, of course. But a few other steps I had read on a Reddit thread [0] also helped me - specifically the point about relaxing facial muscles. For some reason, doing this also seems to calm the mind and reduce random thoughts.
Interesting study, but it mostly reinforces what we already know about sleep mechanics.
Of particular importance is how sensory regions remain metabolically active while higher-order regions downshift during NREM sleep. That suggests the benefit of sleep depends less on how long we sleep and more on the specific activation and de-activation of networks during sleep.
I work in neurotech/sleeptech as the founder of https://affectablesleep.com. Our stimulation triggers sensory pathways during sleep to enhance the brain’s restorative function without changing sleep time.
This systematic review [1] covers non‐invasive approaches to enhancing slow‐wave activity in sleep and outlines their physiology and effects. This focused paper [2] explores the neurophysiology of closed‐loop auditory stimulation during sleep.
Though the title of the post suggests the study looks at falling asleep, the study is really focused on what happens during NREM sleep, which has been our focus for the last few years.
Of particular interest to me right now are the processes of waking. Research suggests that different neural networks come online in a specific sequence, and when that sequence is disrupted, we experience sleep inertia or the sense of not being fully restored.
Tangential: Have had sleep disorders my whole life. Until I read an article here about melatonin (an article that was about substances that have an effect on longevity). So I started taking melatonin every night, 0.5mg. I must say: Never had this kind of deep sleep. Over such a long period of weeks (since I started taking it). My Garmin watch has a sleep tracker. And it confirms that I get way more deep sleep.
Only slightly related, but I often try to find ways to fall asleep faster. One thing that seems to work in some situations is trying to imagine a void (like a white or gray plane) for a while. However, often enough this does not work and I wonder if anyone knows of tricks that work for her/him (without using Melantonin or other drugs).
I started intermittent fasting and my sleep improved remarkably when I stopped eating calories after 3PM. Last night it shows I was awake for 16 minutes but in the morning my dream memories seem to be vast.
My mother got Alzheimer's in her early 60s and was always a super light sleeper despite a healthy and happy lifestyle. I suspect her brain's glymphatic system wasn't kicking in often enough to clean her brain.
I used to think sleep was just like shutting off a computer. But after one night of insomnia, my brain felt foggy all day and I could barely speak clearly. That made me realize sleep is not just about resting the body.
I have been trying deep breathing before bed and it seems to help a little.
How the brain's activity, energy use and blood flow change as people fall asleep
(massgeneralbrigham.org)179 points by XzetaU8 25 October 2025 | 88 comments
Comments
Wake up stupid early in the morning, get drowsy very early in the evenings etc. For a long time due to social pressure/habit I'd just power through the evening drowsiness. That lead to me only being able to sleep six hours or so (due to waking up stupid early), which over time lead to a substantial sleep debt.
Going to bed early helps a lot, but over time it seems like I easily start drifting earlier and earlier. I've recently had some success stabilizing my rhythm using sublingual melatonin when I first waken at 2-3am. Let's me get a couple extra hours of additional quality sleep which is a lifesaver. Wears off quick enough that by 9am or so it's basically out of my system.
I've actually been tinkering/hacking the last year or so on sleep tracking wearables. Initially focused on EEG/HRV monitoring but I'm taking a very modular approach and ultimately want to build a full set of sensors/effectors/etc.
I've recently been experimenting a lot with skin temperature gradients, turns out in the lead up to sleep it's not just blood flow in the brain that is altered [2].
1. https://en.wikipedia.org/wiki/Advanced_sleep_phase_disorder#...
2. https://journals.physiology.org/doi/pdf/10.1152/ajpregu.2000...
Now imagine sleeping in a lab setting, knowing that your sleep data is being measured. Intellectually you know that you're not at any risk but there must be some difference in the architecture of your sleep.
I find that taking the minimal amount make a big difference here, and it's about 3 micro-grams (not milli-grams) for me. The trick is to get some liquid melatonin drops. There is a brand that has 3 milligrams per 30 drops as a recommended dosage, so I just take 3 or so drops and let them dissolve on my tongue. Using liquid drops this way, there is less of a sleep hangover, and It workes faster that way, too.
I think I read about 3 micrograms as more appropriate for most people on lesswrong, but it might have been somewhere else. It's working really well for me, with frequent breaks from it, for five or more years.
[0]: https://old.reddit.com/r/sleep/comments/1bn2emp/how_do_yall_...
Of particular importance is how sensory regions remain metabolically active while higher-order regions downshift during NREM sleep. That suggests the benefit of sleep depends less on how long we sleep and more on the specific activation and de-activation of networks during sleep.
I work in neurotech/sleeptech as the founder of https://affectablesleep.com. Our stimulation triggers sensory pathways during sleep to enhance the brain’s restorative function without changing sleep time.
This systematic review [1] covers non‐invasive approaches to enhancing slow‐wave activity in sleep and outlines their physiology and effects. This focused paper [2] explores the neurophysiology of closed‐loop auditory stimulation during sleep.
Though the title of the post suggests the study looks at falling asleep, the study is really focused on what happens during NREM sleep, which has been our focus for the last few years.
Of particular interest to me right now are the processes of waking. Research suggests that different neural networks come online in a specific sequence, and when that sequence is disrupted, we experience sleep inertia or the sense of not being fully restored.
[1]https://doi.org/10.1016/j.smrv.2021.101438 [2]https://doi.org/10.1111/ejn.16132
My mother got Alzheimer's in her early 60s and was always a super light sleeper despite a healthy and happy lifestyle. I suspect her brain's glymphatic system wasn't kicking in often enough to clean her brain.
Still listening to "Insomnia" from Faithless.