Starting or stopping social distancing, work schedule changes, welcoming a child, and other major life events can disrupt our internal biological timekeeping. This timekeeping controls sleep, metabolism and even immune function. The Social Rhythms app uses data shared anonymously from your Fitbit account with research developed at the University of Michigan to customize reports on how your daily (circadian) clock has been impacted by life events. It also provides information on how proper circadian timekeeping can be restored.