Chronic injuries are long-lasting injuries that develop gradually over time, often due to repetitive stress or overuse. Unlike acute injuries, which occur suddenly, chronic injuries can result from activities like running, swimming, or weightlifting when proper techniques are not followed. Common examples include tendinitis, bursitis, and stress fractures. These injuries can cause ongoing pain, swelling, and reduced mobility, making it difficult to perform daily activities or participate in sports. Treatment typically involves rest, physical therapy, and sometimes medication to manage pain and inflammation. Preventive measures, such as proper warm-up routines and strength training, can help reduce the risk of chronic injuries.