Yes if the Fitbit has the ability to measure heart rate and calories burned it can track yoga. Whilst, that will work we would currently recommend getting the Charge 4 as the tracker comes with Active Zone Minutes. Fitbit's new metric moves away from step counting and uses 24/7 hear rate tracking to give you a baseline resting heart rate. Anything, that increases that is counted as exercise and we would expect yoga to do that more often than not.