The pre-intervention GSDS and PSQI, both self-report measures, were administered as pre-intervention assessments by a research assistant during screening. The sleep journals and actigraph wristbands were used to record data during the 2-day baseline period, 7-day sleep hygiene period, and 14-day intervention period. The post-intervention GSDS and PSQI were completed by participants 2 days after intervention-end and emailed or mailed to the researchers. Sleep journal data were also emailed or mailed to the researchers at study completion.