You should take calorie data with a grain of salt. Here's what I learned after testing the Fitbit Air's heart rate data against a gold standard heart rate monitor.
Nina Raemont/ZDNET
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ZDNET's key takeaways
<ul><li>I tested theĀ Fitbit Air's heart rate data.Ā </li><li>I compared it against the Polar H10 chestā¦ [+7448 chars]
Follow ZDNET:Ā Add us as a preferred sourceĀ on Google.
ZDNET's key takeaways
<ul><li>I tested theĀ Fitbit Air's heart rate data.Ā </li><li>I compared it against the Polar H10 chestā¦ [+7448 chars]