Customer retention, also known as retention, has long been a central theme in the fitness industry. It sounds so simple "customer retention". In practice, however, it turns out to be far from easy to retain customers. Retention has been high on the agenda for many years. This book can contribute to customer retention in fitness centers. It also consists of practical tips and handles that entrepreneurs, managers and coordinators can use immediately in practice. In addition, the book consists of a lot of information intended for employees on the work floor. After all, customer retention largely takes shape in the workplace, the place where direct contact with the customer takes place.