[HanayamaTriplet]

Note that the study was done entirely on BYU undergrads. I would be interested in seeing how the results compare to the rest of the population.

[daishi424]

> A sample of 167 emerging adults (ages 18-24; 71.3% female) with iPhones participated in the study.

BYU University is a Mormon university. I assume students there have a rather healthy sleep routine in general.