assisted motion russian twist

Sit on the ground with your knees bent and feet flat on the floor. Hold the medicine ball with both hands in front of your chest. Lean back slightly, engaging your abs and keeping your back straight. Slowly twist your torso to the right, bringing the medicine ball towards the right side of your body. Pause for a moment, then twist your torso to the left, bringing the medicine ball towards the left side of your body. Continue alternating sides for the desired number of repetitions.