Memory foam pillows with a distinct curve are an example of ergonomic pillows. The design contours to the shape of your head and neck at all pressure points, which keeps you in perfect alignment all night long. Bonus points if the pillow comes with adjustable height pads to match your build. For instance, a large to extra large body build (think The Rock) would be more comfortable with two pads, plus the pillow, providing a level of support and comfort based on his height and weight.