HeyJaredThe Longevity Vault
The Longevity Vault by Kat Fu — the platform that guides you to build your personalized roadmap, based on your risk factors & data, so you can age slower, think better & extend your prime. Its flagship, Sleep OS, helps you reduce 3 a.m wakeups.
- Indexed issues, last 90 days
- 10
- Latest publication
- Sep 29, 2026
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- Jul 6, 2026
Latest issues
Nine hours in bed. How much was sleep? (opens the original)
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You wake tired, struggle through the afternoon, and decide to go to bed an hour earlier.It makes sense. Giving yourself more time should give you a chance to get more sleep.But perhaps you spend that hour waiting to fall asleep. Or you fall asleep earlier and wake earlier too. You’ve given up another hour of your evening, and you’re still tired.Before moving bedtime again, look at what happened to the hour you added.Did you sleep longer, sleep earlier, or spend longer awake in bed?<a class="imag
Tired, awake at 3am & wondering why (opens the original)
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You fall asleep, get a few hours of rest, and wake around 3am feeling awake enough to start the day.Except you’re tired. You want more sleep.There’s no particular worry occupying your mind. You can think of stressful periods when you slept better than this. Yet now you’re lying there, alert, wondering what your body is responding to.The question becomes: “If this is cortisol, why would it be rising when I don’t feel stressed?”<a class="image-link image2 is-viewable-img" href="https://substackcdn
Fixed your sleep? Your brain's overnight cleaning still depends on 6 more things (opens the original)
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Every night while you sleep, your brain cleans itself.Fluid moves through the brain and carries away waste built up during the day, including proteins like amyloid beta and tau that harm brain cells when they pile up.This process is called glymphatic clearance.After 40, it does not run as well as it once did. Sleep is the first thing to get right, but if your sleep is already in good shape, there are 6 more things you can do.Read on...<a class="image-link image2 is-viewable-img" href="https://su
If Magnesium Didn't Help, Look at These 3 Supplements (opens the original)
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Why Magnesium Isn't Helping Your SleepYou started taking magnesium because it comes up again and again whenever sleep is discussed. You take it before bed and wait for something to change. Yet your sleep remains much the same.Magnesium can help when low magnesium is part of the problem. If magnesium is not the limiting factor, taking more may have little effect.Why? A change aimed at magnesium does not address a sleep problem coming from another process.That is where the wider picture becomes us
Should You Use Cannabis for Sleep? (opens the original)
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Someone may have told you a gummy helped them sleep, or that a few drops under the tongue made it easier to stay asleep. Maybe they smoke half a joint before bed. You may have wondered if cannabis could help you too.Cannabis can make sleep feel better for a while, yet sleep-lab tests have not shown steady gains.This article puts those findings side by side and looks at what changes when use becomes frequent.THC, CBD, and CBN affect sleep differentlyCannabis products can contain different cannabi
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