Bluetooth on my phone is always on (Samsung Galaxy S6).
It seems to only sync periodically throughout the day - so the app is always behind in showing the stats.
But right now it's not even showing my heart rate.
Yes, after I wake up, I want to see my sleep stats. Same with activity when I come off of the treadmill. It seems to sync when it feels like it. I wish there was a sync-now button, ala "check mail" in an email app.