The ball shoulder press is a good exercise to build stabilization and muscular
endurance.
Use light dumbbell and keep reps between 12 – 20.
You can also perform this exercise by alternating the arms.
Remember to keep your belly button drawn in throughout the exercise.
Muscles Worked
Primary Muscles: Shoulders
Secondary Muscles: Trapezius or upper and middle back, Core Stabilizers
What you need: A set of light dumbbells and a stability ball.

Preparation :
- Sit on a stability ball.
- Feet shoulder width apart and pointing straight ahead.
- Hold a dumbbell in each had shoulder level.
Movement :
- Draw belly button in.
- Extend arms overhead until elbows are fully extended.
- Slowly return back to start and repeat.
- Alternating Instructions: Extend right arm overhead untill fully extended,
lower slowly and simultaneously extend left arm.