Assess students' understanding of the relative contributions and time courses of the three primary ATP-generating systems (ATP–PCr, glycolytic, oxidative) across varied exercise intensities and durations; require prediction of dominant system(s) for specific intervals (e.g., 6 s sprint, 30 s maximal, 3 min high-intensity, 60 min endurance), interpretation of markers (lactate, VO2 kinetics, PCr depletion), and brief discussion of training and performance implications.