Fitbit fitness trackers are heralded for focusing on whole health, not just on step counts. According to Digital Trends, the company is furthering this emphasis by partnering with Cardiogram. Cardiogram uses the data from your everyday fitness watch to screen for health conditions such as hypertension, sleep apnea, and more. Fitbit users now have access to Cardiogram’s complete suite of health-screening tools. Cardiogram is compatible with all Fitbit devices that have a heart rate monitor.