The goal of this clinical trial is to determine whether a combination of a novel lighting intervention and a behavioral intervention are able to increase total sleep time in adolescents. The main questions this trial aims to answer are whether this combination therapy is able to meaningfully increase total sleep time in adolescents, and do so over a sustained period of time, and whether such a changes is associated with concomitant changes in mood and cognitive performance.

Inclusion Criteria:

1. Aged 14-18 and a full-time student in grades 9-12
2. Male or female
3. Willing and with a schedule permitting them to go to bed at an earlier time
4. Planning on sleeping at home in their bedroom for at least 75% of the study

Exclusion Criteria:

1. Currently taking any medications (including over-the-counter medications, e.g., melatonin) specifically for the treatment of sleep disorders
2. Sleep only in the prone (face-down) position

Deidentified data will be made freely available on Dryad.com. Study protocol, analysis plan, consent form (unsigned), and analytic code will be made available upon request.