Sleeping on your back is also considered a good position for keeping your neck, shoulders, and hips straight, which minimizes the strain on your spine that causes pain. But whatever your preferred sleeping position, you should look at pillows as an important tool that can help your body’s alignment and also help you transition to a new position. This may be especially true if you are a stomach sleeper and frequently wake up with neck, shoulder, or back pain.
Why Mathematical Proof
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