Ball and socket joints also allow flexion and extension. Flexion of the shoulder joint occurs when the humerus (upper arm) moves forwards from the rest of the body, which happens at the end of an ...

Flexion – bending a joint ... This occurs at the hip and shoulder joints during a jumping jack movement. Adduction – movement towards the midline of the body. This occurs at the hip and ...

Also the hip flexor in your quads ... Bend that knee, turn that over, keeping your shoulder down, and use that hand to pull over into a stretch. Of course repeat to the other side.