What does modern sports psychology focus on? How do you influence and train the mental prerequisites for peak performance? Why are some people able to start exercising for their health after years of physical inactivity, while others are not? How do physical activity and especially sports affect mental well-being or personality development? Sports psychology is a diverse, broad, and fascinating field of research and application at the intersection of psychology and sports science. The book introduces the fundamentals of sports psychology in a clear and understandable manner and provides a good overview of its topics and methods.