Assess students' ability to analyze how training load, recovery strategies, and nutrition interact to cause or prevent overtraining syndrome in high school athletes. Scope includes physiological mechanisms (fatigue, hormonal and immune changes), monitoring indicators (performance decline, RPE, HRV, mood/sleep), recovery interventions (sleep, periodization, active recovery, hydration), nutritional factors (energy availability, macronutrients, timing), psychosocial stressors, and designing prevention or management plans appropriate for adolescent athletes.