"Why Can't I Stay Asleep Longer Than 5-6 Hours?"
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"Why Can't I Stay Asleep Longer Than 5-6 Hours?"
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Resources:
Sleep OS Hormones → https://thelongevityvault.com/sleep-os/hormones/
Subscribe for more evidence-based guides on sleep in midlife and beyond → https://thelongevityvault.substack.com
“Why Can’t I Stay Asleep Longer Than 5-6 Hours?”
Most people optimize sleep onset—earlier bedtime, caffeine changes, darker rooms—yet still wake around 2–3 a.m. and drift until morning.
This short episode explains why the issue isn’t getting to sleep; it’s what happens to your sleep architecture in the second half of the night.
Key points:
Cholinergic–GABAergic imbalance can push premature REM and fragment continuity.
Inadequate daytime adenosine buildup shortens the second half of the night.
Misaligned melatonin offset (often from evening light) destabilizes early-morning sleep.
Listen for:How the first half of the night carries more deep sleep, the second half becomes more REM, and how fragmentation in that progression impairs glymphatic clearing, memory, and cognitive resilience.
Read the full article:
“Why Can’t I Stay Asleep Longer Than 5-6 Hours?”
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