The machine torso rotation is an exercise that targets the oblique muscles and improves core strength. This exercise is performed using a torso rotation machine, which allows you to twist your upper body against resistance, effectively engaging the obliques and other core muscles.

1. Adjust the seat height so that your shoulders are in line with the machine's axis of rotation.
2. Sit on the machine and place your feet flat on the floor or footrests.
3. Grasp the handles or place your arms across your chest, depending on the machine design.
4. Keep your back straight and engage your core muscles.
5. Twist your upper body to one side, keeping your hips stationary.
6. Return to the starting position with control.
7. Repeat the movement on the other side.
8. Perform the desired number of repetitions on each side.