Toddler Sleeping (IMAGE) University of Colorado at Boulder Caption A new study led by CU-Boulder shows that bedtimes selected for toddlers by their parents may be out of synch with their internal body clocks, contributing to difficulties settling in for the night. Credit Zach Ornitz, University of Colorado 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.