I received one as a slightly early birthday present, and I'm still getting used to it. One thing I'm not understanding is how it tracks active minutes. I don't count steps as an adequate measure of exercise for me because most of my exercise is on an exercise bicycle. So I had some issues initially because I didn't know how to record exercise bicycling, but I've worked that out and now record all such ones as spinning. Once I got that in place, I didn't have any problems. Where I started running into problems is today, when I started back to work. I have a small portable exercise spinner under my desk which I've been using to get activity while at work, since I work long shifts. However, even though I logged the exercise and it qualified as 100% fat burn (due to my heartbeat being up enough), it didn't give me any active minutes for any of it. The only active minutes I got were from a short nine-minute walk I took shortly after 8 am, which I can guarantee was not at the same level of intensity as any of the spinning I did. My heartbeat was considerably higher during the exercise, so I don't really understand what qualifies as active minutes using this thing. If I'm understanding correctly it shouldn't even have counted that nine-minute stretch because of the ten-minute requirement. I did do some reading and found that it uses METs to measure how much energy is actually put out. Basically if my resting rate were 1 calorie/minute, the rate of energy expenditure would need to be 3 in order to qualify. One thing I did notice when I was looking through my exercise is that I had a couple where the average expenditure was fairly low - around 2* my resting rate, or thereabouts. I could see those not qualifying. But the other two were significantly higher. One averaged 4.5 calories/minute, and the other 5.4. So they should have qualified assuming the 3:1 MET ratio (I seem to use about 7 calories/5 minutes when sleeping for a ratio of 1.4, so 3 METs would be 4.2 calories/minute). Yet they are not listed as active minutes. So I'm at a loss to understand this.
