Choosing the right pillow can make a significant difference in how well you sleep and how likely you are to wake up free of any aches and pains. The purpose of a pillow is to support your head, neck, and shoulders so that they stay comfortably aligned with your spine. Extensive research has shown that different pillow types and materials offer a range of support and comfort, depending on an individual’s sleep needs. We discuss what factors to consider when choosing a pillow and how to test a pillow to know if it’s right for you. What’s the Perfect Pillow for You? The perfect pillow for you depends on your individual needs and preferences, including the position in which you sleep. In other words, your sleep position determines what kind of support you need in a pillow. Spinal alignment is a key component of good posture and overall health. A good pillow does its job by keeping your head, neck, and spine in the ideal alignment.