For the last four years, Sleeptracker AI data has recorded significant disruption in sleep patterns during the fall when we wind the clock back, losing an hour of daylight. In comparison, the state of Arizona does not change its time for Daylight Saving Time. As a result, their data does not show a disruption.
The following link points to a recent discussion on "CBS This Morning" regarding the potential impacts of fall sleep disruption. youtu.be/Bk8zqWKeLy0