Among survey respondents who use a sleep tracker, these were the metrics people paid the most attention to.
Bar graph of the sleep-tracker metrics people paid the most attention to. Sleep duration 75.20%
Sleep score 58.54%
Deep sleep duration or percentage 57.32%
Number of awakenings 53.66%
REM sleep duration or percentage 50.81%
Heart rate or heart rate variability 50.41%
Other metric 2.85%