nordic track

[tonyleigh]

Is there a way for the fitbit to calculate this work out. It didn't register heavy excersize.

[LZeeW]

You need to log this type of activity manually.  Fitbits are step based and not good at picking up activity with added resistance.  I have to log my treadmill separately, because the Fitbit doesn't capture the additional calorie burn when I add an incline.

I suggest creating a Custom Activity for this.  There is no good choice in the drop down menu of activities to pick from.  You can manually add your calorie burn -- if your machine gives you a read-out, your own HRM, or an on-line calorie burn estimator if you have neither of the other two.