The scientific information presented in the first four sections on the onset of fatigue during exercise (Part 1 Fatigue-Energetics, Part 2 Fatigue-Anaerobic Alactic Energy System, Part 3 Fatigue-Anaerobic Glycolytic Energy System, and Part 4 Fatigue-Aerobic Energy System) pointed out the importance of beginning each discussion on energy system metabolism and fatigue with basic knowledge…