Why are my calories burnt so high? I have just put it on for the first time

[josie1725]

Hi jsut wondering why it says ive burnt over 900 cals when ive just taken it out of the box and put it on? 

[SteveH]

Welcome to fitbit!

I think your Surge is working fine.

As well as tracking calories you burn through activity, your fitbit also tracks your BMR calories. These are the calories you burn just keeping your body alive (even when asleep). They are calculated from your profile settings (age, weight etc) so you needn't be wearing your fitbit to get them. What you are seeing is the total BMR calories since midnight. There's more information on this here:

http://help.fitbit.com/articles/en_US/Help_article/How-does-Fitbit-know-how-many-calories-I-ve-burne...

[SunsetRunner]

Basically because you haven't died since midnight.

Fitbit will show you calories spent doing things, but they will also list calories spent being alive (beating heart, breathing, digesting food, making new cells, all the little things we ignore).

When you turned it on it figured that it had been X hours since midnight, and given your age, gender and weight you must have used up at least 900 calories, since you're still alive and that takes Y calories/hour for someone like you, even without exercise.

The more you move the more calories you'll burn, but if you stay in bed all day, just staying alive requires energy and the tracker will take that into account too.

My baseline is about 1700 calories, my daily average is a little over 2900 calories burned, so I'm burning 1200 puny calories a day by moving and 1700 by existing.