Apple watch説明在這裏

https://support.apple.com/en-lamr%60HT211685#:~:text=In%20the%20Watch%20app%20on,to%20turn%20on%20this%20setting.

 

我用的Garmin.  好像就是設好 sleep schedule后，它自己就會記錄。然後可在表上或網站查到數據。