Pillow Talk

Morning sun on a dark wood bed. The Circadian Organic Wool Comforter, a hand-tufted duvet insert, lies thrown back across it.
What Is the Best Humidity for Sleeping? 30 to 50 Percent
Set the thermostat where you like and the bed can still feel wrong. The other number in the room is relative humidity, and above 60 percent your sweat has nowhere... Read more...
A close view of a Circadian Organic Wool Pillow with the cover open along the edge, showing the organic wool inside
What Is a Circadian Rhythm Disorder? The Six Types
Six of these have names, and a clinician is the only one who can hand you yours. What each disorder does to the clock, who it shows up in, the... Read more...
A dog naps on the rug. An Organic Cotton Comforter from Circadian, a hand-tufted duvet insert, lies thrown back on the bed of a brick attic bedroom.
What Is the Best Temperature for Sleep? 65 to 68F
Everyone repeats the same number, and plenty of people set it and still wake up hot. The room is only half the answer, because the air under your covers sits... Read more...
Close view of a Circadian Organic Cotton Pillow unzipped, showing the organic cotton inside the undyed organic cotton cover
What Is Circadian Lighting? How Light Sets Your Body Clock
Light is the one lever on your body clock that costs nothing, and most people are getting a fraction of the dose they think. Here is what the eye's clock... Read more...
The open edge of a Circadian Organic Wool Pillow, the cover lifted to show the soft organic wool inside
How Do You Reset Your Circadian Rhythm? Start With Light
Your body clock answers to light before it answers to anything else. Seven steps in the order that works, the published figure behind each one, and an honest answer to... Read more...
A Circadian Organic Wool Pillow on a sunlit bed with teal linen
Does Your Body Temperature Rise When You Sleep? Not Quite
Deep inside, you cool down through the night. At your hands, your feet and your face, you warm up. Both are the same event, and knowing which is which explains... Read more...
A Circadian Organic Wool Pillow on a made bed with its cover open at one end, the organic wool showing at the opening
What Is a Circadian Rhythm? Your Body's 24-Hour Clock
The word gets used next to every piece of sleep advice on the internet, and almost never defined. A circadian rhythm is any body process that comes around on a... Read more...
A close view of a Circadian Organic Wool Pillow with the cotton cover turned back, showing the organic wool inside
Why Do I Wake Up at 3am? The Science, and What Helps
Sleep runs in cycles, and the second half of your night is the light half. Your core temperature is at its lowest and cortisol is already climbing, so anything at... Read more...
An open Circadian Organic Wool Pillow with the organic wool showing through the zipper of its cotton cover
Why Do I Get So Hot When I Sleep? What to Change
Your body cools itself by pushing heat out through the skin of your hands and feet. You wake up hot when something stops that heat leaving, and most of the... Read more...