My Fitbit used to do it and now I've noticed my Samsung Gear S3 does the same thing, burns calories through the night while it's sat on the charger all night, last night was the first time I'd left it on charge all night and for some reason it burned 577 calories sitting on the charger, have I got it set up in the settings to do this or does it happen for everyone, surely it shouldn't record calories while on charge all night, I've only had my Gear S3 frontier for a month now and I'm really impressed with it apart from this, that's one of the things I didn't like about the Fitbit Blaze.
