Modern understanding of circadian rhythm increasingly centers on the nervous system — specifically, the chronic dysregulation that underlies many circadian rhythm presentations.
The Nervous System in Circadian Rhythm
The autonomic nervous system has two primary states relevant to circadian rhythm:
Sympathetic activation ('fight or flight'): When chronically activated, drives anxiety-type circadian rhythm
Parasympathetic ('rest and digest'): The recovery state — undermined by circadian rhythm
Dorsal vagal shutdown: A third state — freeze/collapse — associated with depression-type circadian rhythm
Signs of Nervous System Dysregulation in Circadian Rhythm
Chronic hyperarousal (always 'on edge'), difficulty relaxing even in safe environments, and feeling perpetually exhausted despite rest.
Regulating the Nervous System for Circadian Rhythm
- Breathwork: Directly activates the parasympathetic nervous system
- Cold exposure: Controlled cold activates the vagus nerve, improving circadian rhythm
- Safe social engagement: Co-regulation through trusted relationships
- Movement: Discharges sympathetic activation accumulated in circadian rhythm