Helps you focus: City denizens tend to suffer from mild ADHD. And smart phones, laptops, wi-fi and the opportunity to essentially contact anyone at any time, compounds the problem of distraction. Then how does one stay focused? The Zen practice of 'thinking about not thinking' boosts your attention span by freeing the mind of distractions. A brain-scan study results showed that Zenmeditation training, in which a person stays alert and aware of their breathing and posture while dismissing wandering thoughts, led to different activity in a set of brain regions known as the default network, which is linked with spontaneous bursts of thought and wandering minds. Their brains were also quicker to return to this Zen mode after being distracted compared with those who had no meditation training. (Thinkstock Photos/Getty Images)