Exercise positively influences heart rate variability (HRV), a significant indicator of autonomic nervous system health. Regular physical activity can lead to increased HRV, reflecting improved cardiovascular health and resilience to stress. Enhanced HRV indicates that the body is better able to adapt to physiological and psychological stressors. This has implications for overall wellness, including better mental clarity and improved mood. Incorporating both aerobic and resistance training can maximize benefits on HRV, making exercise an important tool for maintaining heart and emotional health.