Skip to contentTagged “REM”
- AlcoholAlcohol can help you fall asleep, then breaks up the second half of the night, cuts REM sleep, raises your heart rate and lowers HRV. Less, and earlier, is better.
- Evidence: Strong
- Medium effort
- Free
- Works: tonight
- 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
- Which habits change which metricA table of common sleep habits against the numbers your wearable shows, with the direction of each effect, how sure the research is, and where nobody has looked.
- Evidence: Some
- Low effort
- Free
- Works: tonight to 2 weeks