The Teen Sleep and Health Project is a research study that aims to examine how sleep in teens (grades 9-11) impacts weight over a 16-21 day period. Medications are not used in this study. If you and your teen previously participated in this study, you may be eligible to re-enroll. If you would like more information or are interested in participating, please call the Sleep Research Lab at (817) 735-2337 or email us at sleepresearch@unthsc.edu.