Calories burn not resetting at midnight

[Kuiet_storm]

The only answers to my question as to why my charge 3 is not resetting calories after midnight is that it's counting calories that I burn while I sleep. Well, don't you have to be wearing the fitbit while you're sleeping to do that? When I get up in the morning everything is reset except the calories. My charge 3 has not always done this. This event started happening about a week ago. Could it be the software?

[JohnnyRow]

If your calories burned are truly not resetting at midnight, then they would be still increasing, higher in the morning than when you went to bed.  Is that happening?

You do not have to be wearing the fitbit for it to be registering calories burned.  Your BMR (basal metabolic rate) calories that you are always burning by being alive are always credited, even when you are not wearing the fitbit.

If you click on Calories burned on phone app, then scroll down to any day in the past and look at the bar chart of calories burned throughout the day, I expect you will see calories burned for overnight, even back to before you realized this happening.

See How does my Fitbit device calculate calories burned?   for more on BMR calorie burn.

[Kuiet_storm]

My calories in the morning are lower than they were the night before when
I took my Fitbit off. So at some point it's subtracting calories. For
instances its 6:10am now I picked up my fitbit and its reading 0 steps, 0
minutes but 399 calories burned. That's what confusing to me, I never
notice this before. I've had it at least two years now. But my sister just
purchased a charge 3 last week (she had an off brand tracker before) she
is also confuse about calories already burn in the morning her *off brand
always started out with 0 everything she also does not sleep in her fitbit.