Based on exciting discoveries in mathematics, genetics, psychology and sociology, Connected is a fascinating exploration of how social networks operate. Think it's all about who you know? It is. But not the way you think. Turns out your colleague's husband's sister can make you fat and a happy friend is more relevant to your happiness than a bigger income. Our connections have an astonishing power to influence everything from what we eat to who we sleep with. Intriguing and entertaining, this book will change the way you think about your life, and how you live it.