Abdominals, Obliques, Core
Shoulders, Lower Back
Watch Tutorial
https://www.youtube.com/shorts/45Y-3bPVwAE
https://www.youtube.com/shorts/U1A6-fkTTJg
https://www.youtube.com/shorts/FcUDOraxDnM
https://www.youtube.com/shorts/r7nYjwbO__U
Stand feet shoulder-width.
Hold stability ball both hands.
Arms extended front, chest level.
Engage core.
Rotate torso right, keeping arms straight.
Return center.
Rotate left.
Alternate.