Surge displaying wrong exercise time

[fdemarqui]

I'be been logging all my exercises manually on my Surge and I've noticed that the last two are showing wrong exercise time (both on the app and on the internet dashboard).
Yesterday's exercise was 8 minutes; the app / dashboard says it was 8 minutes but the graphic shows my heart rate for 17 minutes

Anyone knows why this is happening?

[MarreFitbit]

It's nice to see you around the Community @fdemarqui! For trackers that support heart rate monitoring, you would probably only want to log an activity manually if you forgot to wear your tracker or forgot to track the exercise. These trackers take heart rate into account when calculating calories burned, so even if an activity doesn't count steps, you still get calorie count information. 

For other trackers, manually logging an activity works well when step count isn't the best indicator of the calories burned. If you are doing an activity that does not require steps (like cycling or using an elliptical machine), or an activity that requires more than just steps (like tennis or yoga), logging the activity manually improves the accuracy of this activity's contribution to your caloric burn. 

You can also use manual logging to add an activity if you leave your tracker at home. Note that when you manually log an activity, its step and calorie data override the data automatically detected by your tracker during the same time period. This ensures that your steps are not counted twice as long as the manually logged activity has the correct start time and duration.

Hope this clarifies a bit better how manually logging data works. Have a great one!