Assess the student’s ability to design a 12‑week periodized training and nutrition plan for a high‑school middle‑distance runner (800–1500 m) using energy‑system principles. The task should require: outlining macrocycle and microcycle phases (general preparation, specific preparation, competition, taper); prescribing session types, intensities, volumes, and progression that target aerobic and anaerobic systems; integrating recovery strategies and injury risk mitigation for adolescents; creating nutrition periodization (energy availability, macronutrient targets, timing, hydration) aligned with training phases; and specifying monitoring metrics (RPE, HR, performance markers) and adjustment rationale. Students must justify training and nutrition choices by linking them to energy‑system demands and recovery goals and provide a sample week and key session plans.