Find your balance on your knees on the exercise ball. Hold the medicine ball out in front of you.While maintaining your balance on the exercise ball, twist your upper body from right to left. Hold the medicine ball at arms length in front of you throughout this exercise.
Seated oblique twists with medicine ball, sometimes called a Russian Twist, is a very effective exercise for strengthening the abdominal muscles, particularly the rectus abdominis, the external obliques and internal obliques.
