I measure activity on my Garmin Forerunner for the day, then sync it to Myfitnesspal, but the calories never seem to agree. Today. Garmin gave me 215 active kcalories, so I sync it to MFP which tells me I've only earned 8 kcal from exercise! Any ideas why? Sometimes it seems to agree quite well, but most times not.
I tried to upload files showing this, but keep getting an exclamation mark after them (jpg, only 30 kb)