Medically reviewed by Jennifer Steinhoff, MD The humerus is your upper arm bone. It is the longest bone in the upper part of ...

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 ...

Lateral raises develop the shoulder muscles that create an appealing line from shoulder to arm. Holding light dumbbells at your sides, raise arms outward to shoulder height, pause briefly ...

The best arm workouts target several ... Repeat movement with your right hand to your left shoulder. 4. Repeat 10 times on each side for a total of 20 reps. Muscles targeted: Deltoids, lats ...

Related: Anatomy of the Human Shoulder Joint People ... A combination of muscles and tendons—called the rotator cuff—keeps ...