The UCSF TemPredict Study is a research initiative sponsored by Oura, a company which produces a wearable activity-tracking ring, at the University of California, San Francisco. The effort aims to study whether physiological data collected by an Oura ring, combined with symptom surveys, better predict the onset, progression, and recovery for COVID-19. The study will rely on 2,000 healthcare workers who will receive Oura rings and submiti daily surveys of their symptoms. Current Oura owners can also sign up for the study via a dedicated webpage.