Somehow the author was able to do it here, but I'm not sure it was done as guided workout. Great article on how Band compared to others.
7 minutes in hell: one brutal workout with the Microsoft Band and Basis Peak | The Verge
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Minute 2 was odd on both bands, delaying the HR. I wonder if the body takes time to update at the extremities (hands). I don't see why, but there's go to be some explanation.