The document discusses periodization in sports training. It covers various training principles like specificity, overload, reversibility, strength, endurance, speed, power and mobility. It discusses different phases in periodization like preparation, competition and transition. It also discusses different cycles in periodization like macrocycle, mesocycle and microcycle. It provides an example of block periodization being more effective than linear periodization, allowing athletes to achieve similar results in half the time. Finally, it discusses developing a personal performance plan in collaboration with a coach to analyze, prescribe and review an athlete's adaptation, application and transition.