1. Lay on your back with your knees bent and your feet flat on the floor.
2. Exhale and lift your head and shoulders off the floor – put one hand behind your head to support your neck.
3. Make sure you contract your rectus abdomens muscle – bring your rib cage closer to your hips, rather than just bringing up your head.
4. Place your fingers in a horizontal position across your belly button and feel above, over and below the belly button. Assess the width and depth of the gap. It is also relevant if there is a gap how firm or loose the sheath under the belly button feels.