Assess students' ability to apply the FITT principle (Frequency, Intensity, Time, Type) and calculate/use target heart rate zones to design a balanced 7-day exercise plan for an active high-school student (ages 14–18). Require a daily outline with FITT parameters, numeric target HR ranges (showing age-based max HR method and % for moderate/vigorous zones), progression across the week, cross-training and recovery strategies, and safety/modification considerations; students must justify how each day's plan meets fitness goals and prevents overtraining.