Joint function refers to the ability of joints in the body to move and support various activities. Joints are the connections between bones, allowing for flexibility and movement. They play a crucial role in everyday actions such as walking, running, and lifting. Proper joint function is essential for maintaining mobility and overall physical health. Several factors can affect joint function, including age, injury, and conditions like arthritis. Maintaining a healthy weight, engaging in regular exercise, and practicing good posture can help support joint function. Additionally, physical therapy and joint supplements may be beneficial for those experiencing joint discomfort or limitations.