CircadiaOSGuides and comparisons
What the research says about bedroom temperature, what the hardware options cost, and how to get most of the benefit with the thermostat you already own.
The best temperature for sleep
What the research says, why 65°F is a common sweet spot, and why the honest answer is a curve rather than a number.
Read →How to sleep cooler
Nine practical fixes you can do tonight, and the one most people miss: a temperature that changes overnight.
Read →Eight Sleep alternative
A fair side-by-side of the Pod and CircadiaOS: cost, what each one changes, and who each one suits.
Read →Chilipad / Sleepme alternative
Water pads cool one surface. Here is what whole-room control does differently, and what it costs.
Read →Connect your Oura Ring to your thermostat
Oura measures your sleep but cannot act on it. Three steps to close the loop.
Read →Connect your Apple Watch to your thermostat
Apple Watch tracks your sleep stages and wrist temperature. Make that data drive your thermostat.
Read →Connect your Whoop to your thermostat
Your Whoop recovery data tunes your overnight temperature. One variable at a time.
Read →Garmin & Fitbit + thermostat
Your Garmin or Fitbit sleep data tunes your thermostat overnight.
Read →For hot sleepers
Covers off at midnight, freezing by dawn. Why that happens and what a curve changes.
Read →Menopause + thermostat
Why one setting rarely works all night during perimenopause and menopause, and how to set a curve.
Read →Smart thermostat sleep schedule
How to program a four-phase overnight schedule on ecobee, Nest, or Honeywell.
Read →ecobee sleep mode
What ecobee's built-in sleep setting does, and how to go further.
Read →Nest sleep settings
How to dial in Google Nest's sleep schedule for overnight temperature.
Read →Honeywell sleep schedule
How to set a four-phase overnight schedule on Honeywell Home T9, T10 Pro, or Lyric.
Read →Sensi sleep schedule
How to set overnight temperatures on Sensi Touch and Sensi Lite.
Read →Couples + thermostat
One runs hot, the other runs cold. How an overnight curve helps both.
Read →Why do I wake up at 3am?
The temperature connection most people miss, and what to try tonight.
Read →Why do I wake up hot?
The common causes, from the room and bedding to hormones and medicines, and when to see a doctor.
Read →Night sweats when it isn't menopause
Other causes of night sweats, how to rule out the bedroom first, and which symptoms to get checked.
Read →Summer vs winter thermostat settings
What to set at night in heating and cooling season, what it costs, and heat pump and humidity pitfalls.
Read →Best smart thermostat for sleep
ecobee vs Nest vs Honeywell T9 vs Mysa vs Sensi, judged on what matters at night.
Read →Mysa sleep schedule
Overnight timing for baseboard, in-floor and mini-split heat.
Read →Oura temperature and your thermostat
What Oura's temperature deviation measures and how your bedroom moves it.
Read →Apple Watch wrist temperature
Which models have it, what it measures, and how the room affects it.
Read →Does a hot bedroom lower Whoop recovery?
What the research says and how to check it in your own Whoop data.
Read →Sleeping hot next to a partner
Why a shared bed runs hot, and the fixes that actually help.
Read →Baby vs adult room temperature
Infant guidance is about safety, adult guidance is about sleep. How they fit together.
Read →CircadiaOS for menopause
The four-phase curve for perimenopause and menopause, on the thermostat you already own.
Read →Cost comparison
CircadiaOS vs Eight Sleep vs Sleepme — real costs over three years.
Read →Setup guide
Everything you need and how to get started in five minutes.
Read →Not sure where to start?
Take the 60-second quiz to see what your overnight temperature curve looks like.