How do I set up advanced sleep monitoring on my Garmin?

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Tags

1. #while
2. #preferred
3. #sleep
4. #advanced
5. #device
6. #monitor
7. #heart
8. #monitoring
9. #comfortably
10. #tracker
11. #activity
12. #hours
13. #least
14. #snugly
15. #bedtime
16. #before