Jawbone, manufacturer of a popular wireless speakers headsets and other consumer technology, has recently broken into the wearable device field, including a popular fitness tracker called “UP” that monitors - among other things - sleep. The company has been collecting some of the data that has come in from its users regarding their sleep habits and has just released it on their company blog, giving the world an interesting look at the amount of sleep that the citizens of the world’s largest cities are getting per night. The data was collected from thousands of UP wearers in international cities, and tens of thousands in the United States. The devices that Jawbone sells calculate their wearers sleep patterns by not only tracking the time that the person goes to bed and wakes up, but also how long it takes for them to fall asleep, the quality of their sleep, and how many times they wake up in the middle of the night. UP’s calculations of time spent sleeping do not include any time that is spent in bed awake, whether due to a midnight awakening or time it takes to fall asleep. [caption id="attachment_592" align="alignleft" width="300"] Sleep trackers like the Jawbone sleep tracker give deep insight into your sleep habits on a macro and micro level.[/caption] The information that was collected is interesting, particularly to those in the sleep community who know that the human body requires seven to nine hours of sleep per night in order to operate at its best and head off both physical and cognitive problems. According to the company, of the 21 cities that were monitored the people in Melbourne, Australia get the most sleep, getting an average of 6 hours and 58 minutes, while those in Tokyo, Japan get the least with just 5 hours and 44 minutes per night. The data shows that Brisbane, Australia turns in at the earliest average bedtime of 10:57 p.m. and also awaken earliest, at 6:29 a.m., while those in Moscow stay up latest, ‘til 12:46 a.m. and then sleep in until 8:08 a.m. In the United States New Yorkers go to sleep earlier on average than any other city, and Las Vegas has the shortest average sleep schedule for the U.S. The study also notes cultural differences, including afternoon naps at wok in Beijing that are taken by 5% of the study’s participants, and 15% of those in Madrid, Spain also taking a nap. The blogpost says, “New Yorkers work hard and play hard, and they’re the first to bed and among the first to rise. Users in Tokyo are among some of the last to go to bed and the first to wake up, since they only average 5 hours and 46 minutes of night sleep. Dubai has the most leisurely sleep schedule with 10% of users still asleep by 11 a.m.” The data certainly calls into question the information released by the Labor Statistics Bureau citing nine hours of sleep per night as the average in America. That study was roundly criticized for counting the time that people go to bed as the beginning of their sleep time.