Fitbit blaze counting calories and actives minutes at night when not in use

[Mlewington1]

I take my blaze off at night and place in my bedside drawer sometimes when I put it on in the morning it can have up to 3 hours active minutes on it & 3000 calories burnt.

[Rich_Laue]

There only time I've herd of steps counted while on a table of of there is a fan or something else that's causing the table to vibrate.