What body functions does physical activity influence?

The correct answer highlights how physical activity positively impacts the production of hormones and metabolism rate, which is essential for overall health. Engaging in regular exercise influences various hormonal pathways, such as insulin sensitivity, cortisol levels, and the production of endorphins. These hormonal changes can enhance mood, energy levels, and bodily functions, contributing to improved metabolic health.

Additionally, physical activity accelerates metabolism, which can aid in weight management and energy expenditure. By regulating the body's metabolic processes, exercise helps maintain healthy body weight and encourages the effective utilization of nutrients.

Overall, the comprehensive effects of physical activity extend beyond just one aspect of health, affecting multiple systems within the body, thereby demonstrating the importance of regular exercise in promoting a balanced and healthy lifestyle. The other options narrow the focus on specific aspects or incorrectly represent the broad benefits of physical activity, making them less accurate than the chosen answer.