Hi,
I do a 6 mile walk a few times a week.
I used to register it as a walk activity and use the GPS in the Garmin Forerunner.
My normal calorie burn was 1050 for the 2.5 hours of walking activity. (I have quite a bit of weight to lose).
Recently, I've just been counting steps for the same journey rather than registering it as an activity.
My active calories for the exact same walk + time is now 592 calories.
Why the difference? What's more accurate?