In this chapter, we introduce the book by discussing the organization of the rest of the chapters in two parts. Chapters in Part I (edited by Matteo M. Galizzi) report an overview of the main insights and contributions from the field of behavioural and experimental economics focusing on health and pandemics applications. Chapters in Part II (edited by Joan Costa-Font) report an overview of the contributions of health economics and policy, focusing on behavioural incentives, We argue that pandemics can be seen as tipping points and as magnifying glasses, because they can radically affect the whole host of human behaviours, and they amplify existing behavioural phenomena in nature, trends, and patterns.