Which of the following is a benefit of regular physical activity?

Regular physical activity offers numerous benefits, one of which is improved mental health. Engaging in consistent exercise has been shown to reduce symptoms of anxiety and depression while also promoting feelings of well-being. Physical activity stimulates the release of endorphins, often referred to as 'feel-good' hormones, which can enhance mood and decrease stress levels. Additionally, regular exercise can improve cognitive function, boost self-esteem, and enhance the overall mental resilience of individuals, leading to a more positive outlook on life.

The other options do not accurately reflect the holistic advantages of physical activity. Improved digestive health is a potential secondary benefit, but not as direct as mental health improvements. Increased calorie intake does not align with the goals of physical activity, which often aim to achieve a balance with calorie expenditure. Lastly, while some individuals may find that exercise can improve their sleep quality, the idea that less sleep is needed contradicts the principles of healthy sleep hygiene.