Which of the following is FALSE about the health benefits of aerobic exercise?

• A. Improves sleep
• B. Helps increase muscle size
• C. Increases energy
• D. Helps reduce body fat

Answer: (B)

Engaging in aerobic exercise boosts the heart and lungs’ efficiency, improves circulation, and enhances how the body uses oxygen. Those changes often translate into better energy levels, easier recovery, and improved sleep, since regular activity helps regulate stress hormones and the body’s daily rhythm. It also increases total energy expenditure and supports fat loss, helping reduce body fat. The idea that aerobic exercise significantly increases muscle size isn’t accurate because substantial muscle growth (hypertrophy) mainly comes from resistance training with heavier loads and progressive overload. Aerobic activities can improve muscle endurance and tone, but they don’t typically produce noticeable increases in muscle size. So, the statement about increasing muscle size is false, while the other benefits are supported.