A tendon is a tough, flexible band of tissue that connects muscles to bones. When a muscle contracts, it pulls on the tendon, which then moves the bone, allowing us to perform various activities like walking, running, or lifting. Tendons are essential for our body's movement and stability. Tendons are made of collagen, a strong protein that gives them their strength and durability. Common examples of tendons include the Achilles tendon, which connects the calf muscle to the heel bone, and the patellar tendon, which connects the thigh muscle to the knee. Proper care and stretching can help keep tendons healthy and functioning well.