Physical activity is defined as which?

• A. Any movement of your muscles that requires energy
• B. Activities performed in competitive sports only
• C. Only activities that improve endurance
• D. Movements that require no energy

Answer: (A)

Physical activity means any movement produced by your muscles that uses energy. This broad view includes everyday actions like walking, cleaning, and playing, not just formal exercise or competitive sports. The key idea is energy expenditure—if your muscles are moving and you’re burning calories, that’s physical activity.

So why this description fits best? It captures all movements that involve energy use, not just sports or workouts. Competitive sports are only one type of activity and don’t encompass all ways people move. Improving endurance is a possible outcome of activity, but physical activity isn’t limited to endurance training. Movements that require no energy aren’t physical activity, since the defining feature is energy use.