New research from the U.K. shows a strong relationship between early-life physical activity and depressive symptoms later in life. Using simple wearable technology, researchers captured more reliable data than previous studies that depended on self-report. More than 4,000 participants provided physical activity data at ages 12, 14 and 16 and then completed a depression screening at age 18. The data showed that every additional hour of light physical activity per day at age 12 was associated with a 10% reduction in depressive symptoms at age 18. To learn more, see the article from The Lancet Psychiatry.