Wellune doesn't need to be worn like a smart watch or smart band, nor does it require physical contact like a sleep tracking pad. Therefore, the data continues to accumulate even as soon as the user doesn't care about the device. The data accumulated every day is stronger than expected.
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Personal Statistics: The greater the amount of data statistically, the greater the accuracy.
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First Night Effect: Imagine sleeping in a hospital with over ten sensors on. It's more likely that you won't sleep well in an uncomfortable situation, making it difficult to get an accurate diagnosis.
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Elimination of anomalies: Continuous observation will allow you to identify anomalies such as temporary colds and alcohol consumption and remove them from your report. Eventually, the report will be able to identify what your real sleep patterns are.