Camp Walt Whitman at the height of summer is a boisterous, busy place. On any given day at camp, water skiers zoom across the lake, volleys echo off the clay tennis courts, and guitar-strumming counselors lead campers in rounds of songs. It’s a stark change from everyone’s more sedentary habits at home, but the benefits of our sleepaway camp’s full slate of activities are not limited to exercise or sing-alongs. There’s also a profound transformation that takes place every summer among campers, many of whom experience a big, psychological boost.