This article from Outside Magazine is an interesting look at the practice, history, and some health benefits of shinrin-yoku—the practice of forest bathing. From the author, Florence Williams (who just published her new book The Nature Fix):
These days, screen-addicted Americans are more stressed out and distracted than ever. And nope, there’s no app for that. But there is a radically simple remedy: get outside. Florence Williams travels to the deep woods of Japan, where researchers are backing up the surprising theory that nature can lower your blood pressure, fight off depression, beat back stress.