Geographically Resolved Rhythms in Twitter Use Reveal Social Pressures on Daily Activity Patterns (Current Biology)

The discrepancy between sleep patterns on free days and work days is called `social jet lag` and is linked to multiple health problems. Leypunskiy et al. show that spatially resolved records of social media use in the US can be used to detect social jet lag, determine how it varies seasonally, and discover geographical and lifestyle risk factors.