Abduction – movement away from the midline of the body. This occurs at the hip and shoulder joints during a jumping jack movement. Adduction – movement towards the midline of the body.

Dr Jagadish Hiremath, a public health intellectual, says, “This seemingly innocuous movement reveals much about the complexity of the human body’s anatomy, flexibility, and musculoskeletal health.” ...

Deltoid Abduction of the shoulder (moving the arm outwards and away from the body) Outward arm action in a jumping jack Rotator cuffs A group of stabilising muscles of the shoulder which helps to ...

These roles include providing synchronous scapular rotation during humeral motion, serving as a stable base for rotator cuff activation and functioning as a link in the kinetic chain. Each role is ...

By working these muscles, you're more likely to maintain an upright and healthy posture, both at rest and in motion. 2) ...