Three Ways Nature and Outdoor Time Improve Your Child’s Sleep: A Guide for Parents and Caregivers. National Wildlife Federation (NWF) created the Be Out There movement to give back to American children what they don’t even know they have lost: their connection to the natural world. In the process, NWF aims to help reverse alarming health trends and help families raise happier, healthier children. Signs everywhere show the spirit of the movement taking hold. For more information, go to www.beoutthere.org/join