" Studies have found that American teenagers are two and half times more likely to experience elevated enjoyment when engaged in a hobby than when watching TV, and three times more likely when playing a sport. And yet here’s the paradox: These same teenagers spend four times as many hours watching TV as they do engaging in sports or hobbies. "

― Shawn Achor , The Happiness Advantage: The Seven Principles of Positive Psychology That Fuel Success and Performance at Work