The Achilles tendon is a strong band of tissue that connects the calf muscles to the heel bone. It plays a crucial role in walking, running, and jumping by helping to lift the heel off the ground. When you push off your foot, the Achilles tendon helps transfer the force from your calf muscles to your foot, allowing for movement. Injuries to the Achilles tendon can occur, especially in athletes or those who suddenly increase their physical activity. Common issues include tendonitis, which is inflammation, and ruptures, where the tendon tears. Proper stretching and strengthening can help keep the Achilles tendon healthy and prevent injuries.