Test understanding of why warming up and cooling down help young children's bodies before and after exercise, including simple physiological effects (increased heart rate and blood flow, warmer muscles, easier breathing, reduced stiffness), safety and injury prevention, examples of age-appropriate warm-up/cool-down activities (walking, gentle stretches, deep breaths), and the correct sequence and purpose; items ask students to identify benefits, match activities to outcomes, and explain in simple terms why these routines are important.