This is a discussion on 90 minutes sleep rule within the Health and Fitness forums, part of the Topics of Interest category; I saw this video some time ago, and I wondered if this actually works. Have any of you ever tried ...
This would not work for me as I could not calculate when I will fall asleep. Sometimes it takes half an hour, sometimes 2 hours.
yes. it is true. your body cycles at those intervals.
Absolutely is true for SWMBO and I. And...there's an app for that.
The app will wake you up within a 30 minute window of your designated alarm time, based on how deeply you are sleeping. It is sleep cycle and there is a free and a paid version.