One’s sleep position will dictate how a traditional mattress top pillow can be used to provide the appropriate support.

* Using a pillow while sleeping on the back. When lying on the back, a pillow should support the natural curvature of the cervical spine, with adequate support under the head, neck, and shoulders. When sleeping on the back, the height of the pillow should be lower than in the sideways position. Placing a pillow or two beneath the knees further alleviates any back strain, and is the gentlest position on the back.
* Using a pillow while sleeping on the side. When lying on one’s side, a pillow should support the head and neck such that the spine maintains a straight and natural horizontal line. Weight should be evenly distributed so as not to create unnatural bending or pressure. Some people may prefer placing a small pillow or rolled up towel under their waist while lying on the side for additional support.
* Using a pillow while sleeping on the stomach. If sleeping or resting on the stomach is preferred, the pillow should be relatively flat, or the head should rest directly on the mattress, so that the head and neck aren’t turned unnaturally to either side. In this position, it is often best to place another relatively flat pillow under the stomach to help the spine keep its natural alignment.

Over time, most pillows will begin to lose their firmness and no longer support the neck adequately. When the pillow has reached this stage, it should be replaced.

Is this useful?

I would say that pillows do loose their firmness over time, I normally turn my pillow on its side when sleeping on my side, however when sleeping on my front I tend not to use a pillow at all, I find using one rather uncomfortable due to it making my neck bend backwards.

hey prashant, thanks for the useful information !

I don't ever take the pillow while sleeping. But taking your point into the consideration, henceforth I will use it ! Thank again