Physical exercise refers to any activity that enhances or maintains physical fitness and overall health. It includes a variety of movements, such as walking, running, swimming, and cycling. Regular physical exercise helps improve cardiovascular health, strengthen muscles, and increase flexibility. Engaging in physical exercise can also boost mental well-being by reducing stress and anxiety. Activities like yoga and team sports promote social interaction and can lead to a more active lifestyle. Overall, incorporating physical exercise into daily routines is essential for maintaining a healthy body and mind.