Group Fitness in Europe In 2012, EuropeActive started to systematically conduct research on multiple topics in the health and fitness sector. The first publication in this series was the book titled The state of research in the global fitness industry. This publication was based on a systematic search and review, summarising 5,348 studies in total. In 2018, the most comprehensive study on personal training in Europe was published by EuropeActive and Edelhelfer (Gronau and Titze, 2018). This study provided an extended profile of personal trainers in Europe, based on almost 3,000 respondents. In the fitness sector, whilst group fitness is an important activity that is offered by many operators and used by millions of members, there remains a lack of knowledge on this subsector. The present study is one of the first to conduct research on this topic. This book is a must-read for all who are involved in group fitness (management). Dr. Jan Middelkamp is a fitness entrepreneur, behavioural researcher (PhD) and a previous COO of multiple international fitness chains (www.janmiddelkamp.com). EuropeActive is the not-for-profit organisation representing the whole of the European health and fitness sector in Brussels (www.europeactive.eu). Drs. Peter Wolfhagen earned his master’s degree in human movement sciences, he is the research director at BlackBoxPublishers and published many books. Jos Eemstra is the development director at BlackBoxPublishers and specialised in group fitness management.