Fitbit analyzed six billion nights of sleep (yes, that’s billion!) from their users. What’s the single most important thing that users did to get consistent sound sleep? The Fitbit analysis showed that the most important thing you can do to get a great night’s sleep, night after night, is to go to bed and wake up around the same time every single day, including the weekends. Why the weekends? Because that helps us avoid “social jet lag.” We all know that jet lag is the inability to sleep while traveling but what’s social jet lag?