Since the 1970s, kids have lost 12 hours per week in playtime, including a record 50% drop in unstructured outdoor activities and a 40% drop in recess at school, according to Unilever’s “Wisk Active Play” study in 2003. Most mothers (97%) said reducing children’s stress is the No. 1 benefit of outdoor play and 82% think it enhances self-esteem. Moms cited their children’s dependence on TV (more than 4 hours per day), computer games (10 hours per week) and lack of sa...