Circuit play in the pool by Mary E. Sanders, PhD, FACSM

Seventy-six-year-old Stuart Brown is a fit, lighthearted physician and psychiatrist who works out of a tree house in his Carmel Valley, California, backyard. After 40 years of research where he conducted over 6,000 play studies, Brown is hooked on the power of play to maintain a resilient, healthy and joyous life. In his book Play: How It Shapes the Brain, Opens the Imagination and Invigorates the Soul,1 he helps people find the style of play that makes them feel happy, even when faced with difficulties.