Do activity trackers count steps when you don't move your arms?
I have a Jawbone up which I wear on my wrist. As far as I know it calculates my step count by measuring the movements of my arm when I walk/run. So if I have my hands inside the hoodie pockets(when it's cold outside) which I think don't involve in any movement when I walk, how does the fitness tracker count steps? Or does it not count at all?
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I used my up today on a treadmill but I was holding on to the arm rest and it did not count my steps. I felt robbed. I wounded if I put it on my ankle that would be better. I'm usually pushing a stroller so my arms are not moving.
They use various accelerometers and detect motion on numerous algorithms to count at activity. It won't be 100% accurate but it's not "sorry, you didn't swing your arm buddy... NO REP" either.
Try it out? Go for a walk without swinging your arms and see if it counts a reasonable number of steps.
Technically speaking, the accelerometer will definitely be able to record your steps even if you don't swing your arms.
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