A blood clot is a gel-like mass formed when blood cells and proteins stick together to stop bleeding. This process, known as coagulation, is essential for healing injuries. When a blood vessel is damaged, platelets and proteins in the blood work together to create a clot, sealing the wound and preventing excessive blood loss. While blood clots are crucial for healing, they can also pose health risks. If a clot forms inappropriately, it can block blood flow in vessels, leading to conditions like deep vein thrombosis or pulmonary embolism. These situations can be serious and require medical attention.