Faculty Fellow Nitesh Chawla (computer science and engineering) worked on a cardiovascular health study in 2019 which was described in MinnPost's article titled: "Inconsistent Bedtimes Linked to Higher Resting Heart Rate." Chawla conducted the study to find out how sleeping at inconsistent times would affect people's resting heart rate. His team analyzed "data collected from Fitbit devices worn by 557 first-year college students over four years." Although the results did show that “even if you get seven hours of sleep a night, if you’re not going to bed at the same time each night, not only does your resting heart rate increase while you sleep, it carries over into the next day,” says Chawla. It is important to consider that there may be different results if the study is conducted within a different age group and Fitbit tends to overcalculate sleep time.