If you are awake at 4 am, and have to be at work at 7, should you even try to get back to sleep or should you try to do something with your time?
If you are awake at 4 am, and have to be at work at 7, should you even try to get back to sleep or should you try to do something with your time?
There are several Apple Watch apps and such that rather than use a timer, use various biometrics and movement sensing to try and identify when you’re out of REM and start a vibration alarm that increases over time across a 30-minute window. Depending on what smartwatch you use, there might be something.
Edit: on Apple Watch I have an app that does this called AutoWake (it has a companion sleep tracking app called AutoSleep) but I don’t wear the watch to bed anymore.