I have been using my Garmon watch to record walking distances to and from work, the same distance to and from for a few months. I am 5foot 9, 87kg, for a 50 minute walk, at 6.1-6.4 km/h until last week was giving me 330ish calories each way.
Then on Tuesday, my trip into work gave me 331, and my trip back (same distance/speed) gave me 158. My journey in this morning gave me 168??
I am very puzzled, and I have checked using an online tool, and it seems that it should be more around the 330 mark.
Anyone else finding similar problems?? Any idea how to fix?