How do I stop my pillow from going flat too quickly?

Choose a fill that holds its shape: solid or shredded memory foam and latex keep their loft far longer than down or polyester, which compress and flatten within months. Fluff or knead the pillow daily, air it out to release moisture, and use a pillow protector to keep oils out of the fill. Even the best pillow softens eventually, so plan to replace most pillows every one to two years.