According to 2014-2015 data from the Sleep Cycle app, Slovakia reported the best average sleep quality.
This finding is based on data collected from 941,300 app users across 50 countries. While this data offers a snapshot, it's important to consider that app users may not represent the entire population of each country, and sleep quality is subjective and influenced by numerous factors. Furthermore, the data is somewhat dated, and more recent studies might reveal different results.
It's also crucial to differentiate between sleep quality and sleep quantity. While some cultures might report better subjective sleep quality, others might average more hours of sleep.
It is important to note that the data only reflects the average sleep quality as reported by users of the Sleep Cycle app. It does not necessarily represent the sleep habits of the entire population of each country. There may be other cultures that achieve better sleep quality based on other metrics.
