What is normal for sleep Per age group

[Kenbob]

 What is considered normal for sleep as far as percentage in light sleep, REM sleep, and deep sleep? 

 How does that differ with different age groups? 

[USAF-Larry]

@Kenbob, while viewing your sleep record for the day, select the Benchmark icon and it will load a display of your numbers and the averages for a person of your sex & age:

[Fibi1]

Does the benchmark age change when a birth date happens?

or,

What are the benchmark categories of age?

Looked every where for this answer.

[Cmxev]

I want to know this too. I am 69. Am I been compared to a group that includes 75 year Olds? 80 year olds?

[Fibi1]

I also can’t find the benchmark component of my Fitbit program

Marthe

[martysull]

If I change my birth date it doesn’t seem to matter how my score is calculated.

[BettyBeerBelly]

Same here. I don't know if I trust it anymore.