The course book "Training Science" covers various concepts of training as well as the training of different performance factors. This includes endurance, strength, speed, flexibility, and technique training. Smaller projects in each chapter encourage teachers and students to implement their own training programs in physical education classes at the upper secondary level and to evaluate the training effects. This course book is also pedagogically structured with the help of learning and control tasks, key statements, and definitions, making it suitable not only for use as a school book in upper secondary education but also for preparation for the intermediate examination in sports studies.