Get to know your body’s fatigue and recovery at once by using the Reign Advanced Active Recovery Band from Jaybird. This beautifully design wristband comes with the capacity to understand your body’s fatigue and recovery rate by measuring your Heart Rate Variability (HRV) as well as your Activity and Sleep patterns. The purpose is to help you be in top form and get to that last drop of training every single day. It knows how to get you to your...
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