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Learn How Fitness Trackers Work! πŸ’ͺπŸ‹οΈβ€β™‚οΈ Β· How Things Work

Plays on by itself β€” When this video ends, the next one from the same series starts after a few seconds you can stop. It stops by itself at the end of the series.

Now also as an app for iPhone and iPad.Download on the App Store