How much deep sleep does your Fitbit say you get?

[Calathea77]

1. How much deep sleep does your Fitbit say you get, on average? 

2. Would you say you are generally in good health and sleeping well, or not? 

I recently saw a rheumatologist who noticed my Fitbit and asked how much deep sleep I got on average. I said it was about 45 min, and she said this was incredibly low and would be causing various symptoms.

I came home and looked up how reliable Fitbits are when it comes to sleep stages. According to a study, well, there are many things that Fitbits track well, but apparently they're way off when it comes to sleep stages.

I never thought it was like a sleep study, I just use it as a general guide. It does give me some idea of whether I had a good or bad night, and of whether meds or actions I take make a difference.

I'm now curious as to how much deep sleep everyone else's Fitbit is saying they get. I have a Charge 2, if that makes a difference. 

[LZeeW]

@Calathea77  I try to keep to a sleep schedule.  While my exact sleep stages will vary from day to day, I seem to get most of my deep sleep in the first few hours after falling asleep.  If I stay up later, I seem to lose out on deep sleep.

My time in the different sleep stages almost always falls in the benchmark range for my age.

[Calathea77]

How much deep sleep do you get? 

I keep to a sleep schedule as well. 

[jrmnr]

My Fitbit underestimates my deep sleep by a lot compared to clinical sleep study.

It also mistakes quiet lying in bed for light sleep.

What good is it then for?

[Calathea77]

Could you tell me how much deep sleep your Fitbit says you get, and how much the sleep study said you get?

It's only of basic use for tracking sleep. I still find it useful. It does show me my basic sleep patterns, and I can get an estimate of whether my sleep was good or bad that night. That's enough to help me see what effects medication is having, for instance. I never slept well after taking pain medication. I can get back to sleep easily if the cat wakesme up by pouncing around in the middle of the night, but I can't get back to sleep if my partner wakes me up when he's getting up for work, presumably as it's during a different sleep stage. 

[ForecasterJason]

My 30-day average is just slightly over an hour per night, although I do wonder how much accuracy this has. I am not always fully rested when I wake up, but I wouldn't say my sleep is that poor either.

[jrmnr]

My deep sleep averages 40 min according to Fitbit. it goes as low as 6 min, the clinical study was 101 min.

I often lie in bed in the morning listening to the radio and even though I know what is being said my Fitbit claims I was asleep. Go figure.