sleepgood.now

Start here

Read these four pages in order. Each takes about five minutes. Then go to Level 1.

  1. How sleep worksTwo systems decide when you get sleepy and how deeply you sleep. Almost every tip on this site works through one of them.
    • Evidence: Strong
    • Low effort
    • Free
    • Works: 1 week
  2. What "good sleep" meansEnough hours, falling asleep without a fight, few wake-ups, regular times, and feeling alert in the day.
    • Evidence: Strong
    • Low effort
    • Free
    • Works: 1 week
  3. Sleep stages and cyclesLight, deep and REM sleep, why deep sleep comes early and REM comes late, and why "90-minute cycles" aren't precise.
    • Evidence: Strong
    • Low effort
    • Free
    • Works: tonight
  4. How to use this siteThe levels, the badges at the top of each page, how evidence is rated, and what to do first.

Next: Level 1, Basics