Physical activity positively influences cholesterol levels by increasing high-density lipoprotein (HDL) cholesterol, which is beneficial for heart health. Regular exercise reduces low-density lipoprotein (LDL) cholesterol and overall triglyceride levels. Cardiovascular activities such as running, cycling, and swimming are especially effective. Maintaining a healthy weight through physical activity also plays a key role in managing cholesterol. This combination of exercise and diet leads to improved heart health and reduced risk of cardiovascular diseases.