Everything You Need to Know About Pillows Next time you enter your bedroom, take a good look at your bed. See those pillows there? They make up 25 percent of your sleeping surface. Having proper pillows is an easy way to sleep better. "Your pillow is a significant part of getting your much-needed rest," said Elijah Gomez-Spiers, accessories buyer for Mattress Firm. "The wrong pillow can cause aches or make existing pains even worse."