Chest Flys on Ball
You will need two Swiss balls. Bring both balls together, side by side. Place one of your lower arms on each ball. Your body should be approximately at a 45 degree angle with normal curvature of your lower back.
Roll the balls outward, allowing your arms to open up. Continue until you feel you have reached a comfortable range of motion. Squeeze your arms back together, bringing the balls back to their original position. Try doing 2 sets with 10-12 repetitions.
Keep your spine in a neutral position.
Muscles Worked: Chest