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
WWDC2020: Sleep tracking comes to Apple Watch at last, amid otherwise minor fitness updates | MobiHealthNews
Apple WatchOS 9's New Features Include Sleep Tracking, Medication Reminders - CNET
AutoSleep 5' Brings Live Sleep Tracking to Apple Watch and iPhone X Support - MacRumors
Track your sleep on Apple Watch and use Sleep on iPhone – Apple Support (AU)
The Most Comprehensive Guide on Apple Watch Sleep Tracking– Wristcam
Track important health information with Apple Watch Ultra - Apple Support
Sleep Tracking in watchOS 7 and iOS 14: Elevated by a User Experience-Driven Design - MacStories
Does Apple Watch Track Sleep? — SleepWatch
watchOS 7 Adds New Sleep Tracking Feature to Apple Watch - MacRumors
What's the best Sleep Tracking app?: We tested 3 sleep trackers for Apple Watch to find the best | SportTracks
AutoSleep 5 Adds Automatic Apple Watch Sleep Tracking and Much More - MacStories
The best sleep tracking app for Apple Watch - Wareable
watchOS 7: Hands-on with native Apple Watch sleep tracking - 9to5Mac
I tested Apple Watch sleep tracking to save you time and battery life | VentureBeat
How to Track Your Sleep With Apple Watch - MacRumors
Apple Watch might soon get built-in sleep tracking | TechSpot
The best sleep tracking apps for Apple Watch and iPhone
Sleeping With The Apple Watch Series 8 | aBlogtoWatch
Sleep Cycle debuts Apple Watch app with snore prevention, silent alarm - 9to5Mac
Track your sleep with Apple Watch - Apple Support
Best ways to Fix 'Sleep Tracking Not Working' on Apple Watch
Apple Watch vs Fitbit: How accurate are they as sleep trackers? | ZDNET
How to Use the Apple Watch Sleep Tracker | PCMag
Apple Watch not tracking sleep or sleep stages? Here's what you can do - MyHealthyApple
A First Night with Apple's New Sleep Tracking Feature | DC Rainmaker
