13/03/2026
Happy World Sleep Day!
Most people think sleep problems start at night.
They don’t.
These two screenshots show the same person, two different days.
Same bedtime.
Same routine.
Same number of hours in bed.
But one key variable changed:
The state of the nervous system going into the night.
On a stressful day, HRV dropped meaning the body’s recovery capacity was lower.
On a calmer, more regulated day, HRV rose and the system recovered more easily.
This is why so many high-functioning people feel confused about their sleep.
They try to fix the night:
• better sleep hygiene
• supplements
• breathing apps
• earlier bedtimes
All these things matter, but sleep is rarely just a night-time problem.
It’s a system stability problem.
If the nervous system is carrying strain into the evening, the body doesn’t fully power down and recovery becomes fragile.
Which is why the real question often isn’t:
“How do I sleep better?”
It’s:
“What state is my system in before I even get to bed?”
Sleep is the outcome.
Stability is the cause.