When you create your account, you enter into a 14 day calibration period where Kira your personal assistant will learn about you. During the 4 first days, you'll have limited data into your sleep and activity circles. This period is helpful for you to learn about the metrics and the app. Kira will also ask questions about your lifestyle and will correlate the data with your metrics to build references and define your chronotype. This will help to give accurate recommendations after the calibration period.
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