“It is We Who have sent down the Dhikr (The Quran) and surely, We will guard it (from corruption).” (15:9)
Changing a patient's position in bed every 2 hours helps keep blood flowing. This helps the skin stay healthy and prevents bedsores. Turning over the body prevents bedsores. You can also confirm it by doing an independent research.
You would think them awake, although they were asleep. And We turned them over to the right, and to the left, with their dog stretching its paws across the threshold. Had you looked at them, you would have turned away from them in flight, and been filled with fear of them.
"And We turned them over to the right, and to the left" today we know why; in order to prevent bedsores.