New Delhi, Oct. 1 -- Written by Dr. Aishwarya Panchal

The best pillow isn't necessarily the same for everyone. A pillow that feels supportive to one person may leave another waking up with a stiff neck, and sleeping position is one of the main reasons. Your position affects the distance between your head and the mattress, which in turn influences the amount of support your neck needs. Mattress firmness, shoulder width, body shape and personal comfort matter too.

So whether you're looking for the best pillow for sleeping, a pillow for shoulder pain, or simply trying to understand how to choose a pillow, start by considering how you sleep.

Side sleepers have more space between their head and the mattress because of the width of their sho...