Smarter advice for better sleep
Evidence-based information, practical tips, and trusted recommendations to help you understand your sleep and improve it.
Evidence based
We translate the latest research into real-world advice.
Practical tips
Actionable strategies you can use to improve your sleep each night.
Trusted
Reliable, independent information you can count on.
For real life
Solutions that fit your lifestyle, not someone else's.
Free sleep tools
Sleep Score Quiz
Score your sleep habits in 2 minutes and find your biggest sleep blocker.
Bedtime calculator
Work out the best time to go to bed or wake up, based on 90-minute sleep cycles.
Bedroom audit
A quick checklist that scores your sleep environment and tells you what to fix first.
Chronotype quiz
Find out whether you're built for early mornings or late nights.
Sleep routine builder
Get a personalized evening wind-down routine built around your schedule.
Popular topics
Sleep basics
How sleep actually works: cycles, circadian rhythm, sleep needs, and the habits that set up good nights.
Insomnia
Trouble falling asleep, 3am wake-ups, racing thoughts, and what to do about each of them.
Sleep environment
Temperature, light, noise, and bedding. Small changes to your bedroom that pay off every night.
Sleep products
Honest, evidence-aware looks at mattresses, trackers, sound machines, and sleep aids.
Sleep routines
Evening wind-downs, morning routines, naps, shift work, and travel. Systems that make sleep consistent.
Sleep disorders
Snoring, sleep apnea, restless legs, and other conditions. What they look like and when to see a doctor.
Latest guides
How to stop waking up at 3am
Waking at 3am with a racing mind has a handful of common causes. Here's what's actually happening and what to do tonight, and this week, to fix it.
Sleep basicsHow sleep cycles work (and why you wake up groggy)
Your night runs in 90-minute cycles of light, deep, and REM sleep. Understanding them explains groggy mornings, and how to time your alarm better.
Sleep environmentThe best bedroom temperature for sleep
Research points to a bedroom around 65-68°F (18-20°C) for most sleepers. Here's why cooler wins, and cheap ways to get there in any season.