Night Owls Take Note (IMAGE) University of Delaware Caption A new study in the Annals of Behavioral Medicine finds a link between adequate sleep, earlier bedtimes and heart-healthy behavior. Credit UNIVERSITY OF DELAWARE/Jeffrey C. Chase Usage Restrictions Must credit University of Delaware 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.