Bedsores are a serious problem for patients who are paralyzed or have long-term anesthesia, such as a coma or certain diseases. To prevent this problem, doctors recommend turning patients over on their left and right sides every few hours to allow the skin to regenerate.
There is a Surah in the Quran called Al-Kahf that tells the story of the Companions of the Cave who go into a long sleep and God keeps them healthy. In these verses, the subtle scientific point of protection from bedsores is stated:
وَتَحۡسَبُهُمۡ أَيۡقَاظٗا وَهُمۡ رُقُودٞۚ وَنُقَلِّبُهُمۡ ذَاتَ ٱلۡيَمِينِ وَذَاتَ ٱلشِّمَالِۖ وَكَلۡبُهُم بَٰسِطٞ ذِرَاعَيۡهِ بِٱلۡوَصِيدِۚ لَوِ ٱطَّلَعۡتَ عَلَيۡهِمۡ لَوَلَّيۡتَ مِنۡهُمۡ فِرَارٗا وَلَمُلِئۡتَ مِنۡهُمۡ رُعۡبٗا
Al-Kahf

You would have thought they were awake, although they were asleep. We turned them over on their right and left sides, when their dog stretched its forelegs at the entrance. If you had seen them, you would have fled away from them, filled with horror.​​​​​​​