THE TEMPERATURE SIGNAL
Sleep does not begin when you close your eyes.
It begins when your body starts preparing for night.
One of the signals involved is temperature.
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Across a normal day, body temperature follows a rhythm. The evening shift toward cooler conditions is part of the wider transition into rest. That is why many people sleep better in a cool, dark, quiet room than in a warm, bright, stimulating one.
This is not a command to obsess over a thermostat.
It is an invitation to notice the environment your body has to work with.
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FIELD PROTOCOL
Try a cooler bedroom tonight. Dim lights earlier. Take a warm shower or bath well before bed, then let the natural cooling afterward become part of your wind-down.
Small environmental cues can become reliable rituals.
Sleep is not forced.
It is invited.
CODE: SLEEP-TEMPERATURE / EVENING-RITUAL / COOL-DARK-QUIET / CIRCADIAN-REST / FREQUENCY-HEALTH
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2September 5, 2026 434 2
