I woke up with a stiff neck three mornings in a row and assumed I was getting old. I am in my thirties. That felt too young to make groaning noises every time I turned my head. My wife suggested I needed a better pillow. I bought a sixty-dollar memory foam pillow. The neck pain got worse.

Turns out the problem was not the pillow — it was how I was using it. A physical therapist friend watched me demonstrate my sleep position and said, “Your pillow is too high, and your neck is bent all night. You are basically doing a crunch with your neck for eight hours.”

The Right Pillow Height

Your pillow should fill the gap between your ear and your shoulder so that your spine is straight from your neck to your tailbone. Not curved up. Not sagging down. Straight.

For side sleepers like me, the gap is larger — roughly four to six inches. The pillow needs to be thick enough to bridge that distance. Too thin and your head tilts down toward the mattress. Too thick and your head tilts up. Both strain the neck.

For back sleepers, the gap is smaller — two to four inches. A medium-loft pillow that supports the natural curve of your neck without pushing your head forward is ideal.

For stomach sleepers, you want almost no pillow at all — a very thin one, or none. Stomach sleeping already twists your neck to one side, and a thick pillow makes the angle worse. Honestly, stomach sleeping is hard on the neck no matter what. If you can train yourself to side-sleep, your neck will thank you.

How I Fixed Mine

I am a side sleeper. The memory foam pillow I bought was too high — it pushed my head up at an angle all night. I switched to a adjustable shredded foam pillow where I could remove filling until the height matched my shoulder width. It cost half as much as the fancy memory foam one.

I also started using a small rolled hand towel inside my pillowcase at the bottom edge, right under my neck. It fills the natural curve and prevents my neck from sagging. This worked so well that I stopped even thinking about neck pain. It has been six months.

The Morning Check

If you wake up with neck pain, pay attention to where it hurts. Pain at the base of the skull usually means your pillow is too high. Pain in the side of the neck usually means it is too low. Pain between the shoulder blades often means you are a stomach sleeper and your neck is twisted. Adjust accordingly.

My sixty-dollar pillow is now the guest pillow. My thirty-dollar adjustable one is the permanent resident. Sometimes cheaper and simpler is better. Especially when it means you can turn your head without wincing.