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

Engaging in regular physical activity is widely recognized for its positive impact on mental health, particularly in improving mood. Physical activity stimulates the release of endorphins and other neurotransmitters that can enhance feelings of happiness and reduce symptoms of anxiety and depression. This biochemical response is one reason why people often feel a "runner's high" or a sense of well-being after exercising.

On the other hand, options associated with increased screen time, decreased energy levels, and increased sedentary behavior do not align with the benefits of physical activity. Increased screen time typically leads to a more sedentary lifestyle, which is linked to negative health outcomes. Decreased energy levels are generally associated with inactivity rather than regular physical activity, which tends to boost energy and stamina over time. Similarly, increased sedentary behavior is detrimental to health and contradicts the positive effects that regular exercise has on overall well-being. Thus, the benefits of improved mood from regular physical activity stand out clearly as a key advantage.