Changes

The Zeo is considered to be a reliable way to measure polyphasic sleep adaptation progress. According to a study<ref>https://doi.org/10.1586/17434440.2016.1171708</ref>, the Zeo is between 78.9% to 83.5% accurate when compared to a [[Wikipedia:Polysomnography|PSG]], the gold standard in sleep measurements. This sets it apart from most consumer-grade sleep tracking products, which have very poor performance and are not considered useful.

The Zeo is considered to be a reliable way to measure polyphasic sleep adaptation progress. According to a study<ref>https://doi.org/10.1586/17434440.2016.1171708</ref>, the Zeo is between 78.9% to 83.5% accurate when compared to a [[Wikipedia:Polysomnography|PSG]], the gold standard in sleep measurements. This sets it apart from most consumer-grade sleep tracking products, which have very poor performance and are not considered useful.