Changes Associated with Sleep Restriction (IMAGE) University of Chicago Medical Center Caption These images show profiles of fatty acids (a) and growth hormone (b) during normal sleep (black lines) and restricted sleep (red lines) in 19 participants. Credit J. Broussard and co-authors Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.