Which term best describes regular, low-intensity activity that maintains health?

• A. Adrenal-cortical stress reaction
• B. Sleep hygiene
• C. Moderate physical activity
• D. Sleep deficit

Answer: (C)

Regular, low-intensity activity that maintains health is moderate physical activity. This level gently increases your heart rate and breathing, and you can still talk without gasping, making it sustainable day after day. It includes activities like brisk walking, light cycling, or easy swimming, which help improve cardiovascular fitness and overall health without leading to exhaustion. The other terms point to different ideas: an adrenal-cortical stress reaction is the body’s hormonal response to stress; sleep hygiene involves practices that improve sleep quality; and sleep deficit means not getting enough sleep. So moderate physical activity best fits the description of regular, low-intensity activity that maintains health.