Flexion is a type of movement that decreases the angle between two body parts. It typically occurs at joints, such as the elbow or knee, allowing for actions like bending the arm or leg. This movement is essential for various daily activities, including walking, running, and lifting objects. In anatomy, flexion is often contrasted with extension, which increases the angle between body parts. Both movements are crucial for maintaining flexibility and mobility in the musculoskeletal system. Understanding flexion helps in fields like physical therapy and sports science, where improving joint function is a key focus.