Contagious by Jonah Berger is a thought-provoking book that explores the science behind why certain ideas, products, and behaviors become contagious. Berger identifies six key principles that drive word-of-mouth and viral marketing, including social currency, triggers, and emotional resonance. This book provides practical insights into how to create contagious content and campaigns that generate buzz and drive customer engagement. Whether you're a marketer or business owner, Contagious offers valuable strategies and techniques for building word-of-mouth and harnessing the power of social influence in the digital age.