Lying on your back, place your hands on the floor on either side of your hips with your arms extended.
Keep your legs elevated and bent at a 90º angle.
Now use the strength of your abdominal muscles to lift your hips off the floor, so that only your arms and back remain supported on the ground.
Return to the starting position to complete one repetition.
This exercise allows you to work the muscles of the abdominal area, minimizing the work of the pso.