What "fight or flight" really does to your day
The stress axis is not a metaphor. A look at what sympathetic activation changes in sleep, focus and digestion.
Blog
Plain-language writing on physical and mental health — what your markers mean, how the nervous system works, and how the two are connected. Mechanism first, jargon never.
The stress axis is not a metaphor. A look at what sympathetic activation changes in sleep, focus and digestion.
A single number out of range rarely means much. How markers read each other — and why context changes everything.
Before you "fix" your sleep, it helps to know what the brain is actually doing across the night.
More articles are on the way — this is where they will appear.