You know those small moments of connection? A smile. A hand squeeze. These micro-moments of connection change you for the better in an unbelievable way—not just emotionally, but physically. Professor and positive emotions scientist Barbara Fredrickson has discovered that even a small moment of emotional connection—a single positive feeling between two bodies—affects the vagus nerve, which slows your heart and regulates heartbeat. Watch below to learn why micro-moments of love are healthy!