Pushing start and stop on the Blaze is you telling Fitbit to log the time as being on a bike. You could just hop on the Bike and let Fit b it figure out and log your ride. Or log it manually later, there is two ways of doing this.
I'm still at a loss by what your seeing when you say two calorie and heart entries in your log. Are you looking at it through an app or webpage? And would it be possibly to post a screen shot?
Where are these two entries? I see one page with heart data, another with calories, then calories on the of today screen.
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