Brighter Days, Darker Nights

Brighter Days, Darker Nights

The science of dorveille, or ‘twixt sleepe and wake’

Circadian sleep training: how to shift monophasic or polyphasic as needed

Nikko Kennedy's avatar
Nikko Kennedy
Jan 23, 2026
∙ Paid
a woman sitting on top of a bed in a room
Motherhood is hard enough—sleep in motherhood doesn’t need to make it worse. Thank you for the photo, Adrian Infernus.

Young babies and children require care around the clock.

Mothers need to sleep.

Mismatch?

I would argue no.

If you are feeling like a zombie (or “mombie”, a term I learned from Liberty Farms Illinois), you are not alone and there are things you can do in mindset and sleep biology that can help you feel better even though your sleep is interrupted.

A new/old perspective on sleep in motherhood:

If you are in optimal circadian health, you have the ability to smoothly transition from monophasic to polyphasic sleep through a scientifically validated (but ancient) alternate sleep architecture pattern.

The problem is, most of us are starving for both daylight and darkness and absolutely pummeled by artificial light and unfettered access to globally supplied food products, day or night.

A few adjustments to your circadian timing cues and, like magic, your sleep will transform.

Not in a way that means yo…

User's avatar

Continue reading this post for free, courtesy of Nikko Kennedy.

Or purchase a paid subscription.
© 2026 Nikko J. Kennedy · Privacy ∙ Terms ∙ Collection notice
Start your SubstackGet the app
Substack is the home for great culture