Fitness Trackers (IMAGE) Cedars-Sinai Medical Center Caption Fitness trackers, also known as wearable activity monitors, come in many models and brands. Credit Cedars-Sinai Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.