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A warm welcome to the Forums @Alex42. When working at a desk, cooking, or doing other arm movements, your tracker can pick up some extra steps if it thinks you're walking. Many of these situations such as working or cooking do include a few steps in between stationary periods so the tracker tries to give you credit for those steps. If you think that the amount of steps counted is being to much, I recommend getting in touch directly with our support team, since they have the proper tools to see the information that your Blaze is registering. For a faster response you can contact them via phone or chat.
Catch you later. 
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