Kirsi-Marja Zitting

Beyond the Circadian Rhythm: Variable Cycles of Regularity Found in Long-Term Sleep Tracking

Sleep is more than resting eight hours a day---it contextualizes and shapes the routines during the day. Using a large-scale naturalistic dataset of 180,083 people from a popular sleep app, made possible by the widespread adoption of passive tracking, we find that people’s lives have distinct natural rhythms that can…