Physical activity (PA) is essential for the cardiovascular, emotional, and social health of all children and adolescents. However, for pediatric patients with cardiomyopathy, decades of risk-averse clinical guidance have resulted in widespread PA restriction due to fears of sudden cardiac death and disease progression. This has contributed to sedentary behavior, poor cardiorespiratory fitness, and increased risk of secondary cardiometabolic conditions in this population. However, emerging data c