Is stomach sleeping bad for you? In a nutshell, yes.
Stomach sleepers often insist that they are unable to sleep in any other position. But changing your sleeping position is essential, as sleeping on your stomach can be the cause of neck, back, hip and shoulder pain, and even headaches.
In order to sleep on your stomach, you must turn your head in one direction to be able to breathe, leaving your neck in constant rotation throughout the night. This causes diminished blood flow to the head and neck, which can cause headaches, kinks and pain.