Fitbit's Sleep Tracking VS Garmin (an experiment of sorts...) & Settings

[galaga6846]

My son has a Garmin. I have a Fitbit Alta. We decided to switch last night to see how our sleeping scores changed.

I had a very bad night, like every night, I couldn't sleep. The Garmin tracked me at 10 hours in bed, 4 hours light sleep, 2 hours deep sleep, the rest, awake. It doesn't have an option to change the sleep sensitivity.

My Fitbit has similar results in the "sensitive" mode. In the "normal" mode it has me getting 8 hours of quality sleep with no light blue bands. 

Some night in which I know I didn't sleep at all, on the sensitive setting the Fitbit has my sleep at 5 hours, but on nights where I know I had nice long stretches of restful sleep, it may have me logged as little as 3 hours of sleep.

I am so confused by all of this. I have become a little obsessed. I don't know which setting to use. I'm tired and miserable, and I'm hoping to get a little help. Thank you.

When I use

[A_Lurker]

Take a deep breath and relax. 

I believe the Alta doesn't track heart rate so your sleep time will be based on movements.  If you are prone, staring at the ceiling, this may be logged as deep sleep.  If you are tossing and turning this might be picked up as restless.  I'm not actually sure if the heart rate tracker will help.  I sometimes doze or read on a Saturday morning and it will still assume I'm asleep.

I move a lot in my sleep.  I found that the sensitive was making me more anxious.  Last night on normal I was in bed for 10h13m and awake 4x and restless 8x.  The awake is valid, not sure about the restless.  If I change it to sensitive the restless changes to 15x.  However when I first started on sensitive it was probably 40x.  I'm not sure if it got better because of weightloss or I just stopped stressing about it.