Although most Americans sleep with two pillows, Missouri-based physical therapist Sammy Spiegel recently revealed why you may ...

In addition, a supine position allows outstretched ... your neck and use a flatter pillow for your head. Using a pillow under your knees can support your spine's natural curve and take some ...

The supine position can help take pressure ... Using pillows to support the head and neck, and smaller pillows under the lower back or knees, can also help keep the spine aligned and relaxed.

The next most common sleeping position is lying on the back with the face facing upwards, which is also called the "supine ... small pillow or rolled towel can also be used under the knees ...