Slumping or hunching over in a chair is particularly straining. Selecting a chair that supports your lower back is essential. These pillows wrap around the neck and thus help keep your head upright and maintain proper alignment of cervical disks. Bad sleeping position is a common cause of aches and pains. If you have a stiff neck or shoulder most mornings, try a different pillow.
New pillows can be expensive.
No one pillow is going to answer everybody's needs. Ideally, your neck should be straight most of the night. Some foam pillows are too high and firm, or too bouncy. Some down pillows are too soft and flat. If your mattress is very firm and you sleep on your side, you many need a thicker pillow than you would on a mattress that allows your shoulder to sink into it.