Consist sleep for toddlers (IMAGE) University of Delaware Caption A team of researchers including UD Assistant Professor Lauren Covington found that children from households with greater poverty had more overall inconsistent sleep onset times. Those with more inconsistent bedtimes had higher body mass index (BMI) percentages. Together, that could explain the association between household poverty and BMI. Credit Photo by Ashley Barnas 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.