“If your neck is bent in any way for an extended period of time, you’ll get uncomfortable,” explains Matthew O’Rourke, a physical therapist at Spaulding Rehabilitation Hospital. He says a pillow that’s too soft or too firm often leads to neck pain. For example, if you sleep on your side with a soft pillow that doesn’t provide enough support under your neck, your head has to extend sideways to meet the pillow. If you sleep on your stomach—a position that hyperextends the neck backward—then using a firm pillow pushes the head back even farther. “If you’re on your stomach with your head to the side, you’re sleeping in a full rotation position, and that can become painful,” O’Rourke says. Likewise, sleeping on your back with too much firm support pushes the neck too far forward. The type of fill used within a pillow is a number one influence to loft and comfort. Much of what is used within a pillow determines the degree of softness or the firmness level. Different fills can also be used to help alleviate allergies or can be specific to cooling and warming needs. The core difference of pillow fillings! How many kinds of pillows have you used? Materials can divided into six categories: 1 natural plants. 2 chemical fiber. 3 natural latex. 4 feather down. 5 memory foam. 6 new materials There are all kinds of pillows on the market, such a wide variety of pillows, you can not be blinded, the key is to
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