NERVOUS SYSTEM
Understanding the Link Between Chronic Stress, Sleep and Digestion
Why high-alert workdays often follow you into the night — and gentle physiological cues that help the body shift back into rest and recovery.
Reviewed by Dr. Julian Mercer, MD
8 min read
September 2026
When the day never truly ends
Many patients describe feeling exhausted at 9:00 PM yet wide awake the moment their head touches the pillow. From a physiological perspective, prolonged cognitive demand keeps sympathetic arousal elevated, delaying the natural evening drop in core body temperature and cortisol.
Small anchors for autonomic recovery
Instead of overhauling your entire routine overnight, start with two reliable transitions: stepping into natural morning light within thirty minutes of waking, and creating a fifteen-minute low-stimulation buffer before bed.
EDUCATIONAL RESOURCE DISCLAIMER
This guide is provided for general health education and does not constitute individualized medical or psychological advice. To discuss your personal care needs, please book an initial consultation.