Final answer:
Relieving low back discomfort while lying on the stomach can be achieved by placing a pillow under the hips or stomach area, aligning the body's center of gravity similarly to good standing posture.
Step-by-step explanation:
Low back discomfort when a client is lying on her stomach can often be relieved by positioning a pillow under the hips/stomach area. This adjustment can help maintain a proper alignment and reduce strain on the back by simulating a more neutral spine position similar to good posture standing or when the center of gravity is aligned above the hips. Additionally, ensuring that the bed supports the natural curve of the spine can contribute to comfort and may prevent back strain and damage to disks.