What occurs during flexion of a jointed body part?

During flexion of a jointed body part, the two ends of the bones that form the joint move closer together. This movement decreases the angle between the body parts, such as when bending the elbow or knee. Flexion is a fundamental movement pattern often contrasted with extension, where the two ends move farther apart. Understanding the mechanics of flexion is crucial for trainers and fitness professionals as they develop programs to improve strength, flexibility, and function in senior clients, ensuring they can perform daily activities safely and effectively.