Wind-Down Routine
topic
A sleep wind-down routine is a consistent sequence of low-stimulation, relaxation-promoting activities performed in the 60–90 minutes before the desired sleep time — including dimming lights (reducing blue-spectrum light exposure), reducing screen engagement, performing relaxing activities (reading, light stretching, bath or shower), avoiding cognitively stimulating content, and beginning the psychological decompression from the day's demands — that allows the nervous system to transition from the sympathetically-activated waking state toward the parasympathetically-dominant sleep-preparatory state.
Role
The wind-down routine is one of the most evidence-supported sleep optimization practices and one of the most consistently omitted by people who read sleep advice but find implementation difficult with active evening social and professional lives. The key physiological mechanism — allowing core body temperature to begin its sleep-preparatory drop, allowing adenosine to accumulate without caffeine interference, allowing melatonin to rise without light suppression — takes approximately 60 minutes to complete, meaning that the person who transitions directly from high-stimulation activity to attempted sleep at their desired bedtime is attempting sleep before the physiological conditions for it have been established.