Sleep tracking with the new update is the best. I use a third part app to track my sleep and in competition the both ones are very similar but the information is
Track your sleep on Apple Watch and use Sleep on iPhone - Apple Support
watchOS 7 Adds New Sleep Tracking Feature to Apple Watch - MacRumors
The Best Sleep Trackers for Apple Watch - PhoneArena
Apple Watch sleep tracking was planned for over five years | AppleInsider
AutoSleep 5' Brings Live Sleep Tracking to Apple Watch and iPhone X Support - MacRumors
Sleep Tracking with the Apple Watch Ultra - Jessica Bryson
Track important health information with Apple Watch Ultra - Apple Support
Apple's New Watch OS Promises Intense Sleep Tracking | Sleepopolis
Apple Watch : Scientific Sleep Test - YouTube
Apple Watch with watchOS 9 provides sleep tracking comparable to an EEG device
How to Track Your Sleep With Apple Watch - MacRumors
How to Set Up Sleep Tracking on Apple Watch
Sleeping With The Apple Watch Series 8 | aBlogtoWatch
The best sleep tracking app for Apple Watch - Wareable
Apple Watch Sleep Tracking: How it actually works // Setup, Tested, Details, Comparisons - YouTube
I tested Apple Watch sleep tracking to save you time and battery life | VentureBeat
Apple Watch not tracking sleep or sleep stages? Here's what you can do - MyHealthyApple
How to track sleep on Apple Watch in watchOS 9 - iGeeksBlog
WWDC2020: Sleep tracking comes to Apple Watch at last, amid otherwise minor fitness updates | MobiHealthNews
The Most Comprehensive Guide on Apple Watch Sleep Tracking– Wristcam
