For the past decade, a nonprofit called Experience Corps has “paired people ages 55 and older with students in kindergarten through third grade who need academic help. Across 19 U.S. cities, volunteers have taken up literacy coaching and proven that in their spare time they can significantly increase students’ test scores and morale. Which is great.” But it’s not the really interesting part. What was really interesting is what happened to the tutors. A health tip from James Hamblin: Find Purpose in Life.