I woke up with a stiff neck so often that I started sleeping on my back with no pillow at all. That helped a little, then made it worse. So I went on a pillow buying spree, three different kinds over four months, and one of them fixed me. Here is what I learned, so you do not have to buy three pillows.

Why Pillows Cause Neck Pain

Your neck needs support that keeps your spine in a straight line from your head to your hips. A pillow that is too thick or too thin bends your neck for eight hours, and you wake up paying for it.

Pillow One: The Soft Down Pillow

It felt amazing in the store and collapsed to nothing overnight. My head sank to the mattress and my neck bent sideways all night. Soft pillows are great for side sleepers who hug them, useless for me. It now lives on the couch.

Pillow Two: The Tall Memory Foam

This one was the opposite problem. It was too thick, and my neck arched upward all night. I woke up with a headache and a neck that felt stretched. Memory foam also holds heat, and I woke up sweating in the summer.

Pillow Three: The One That Worked

A medium loft, contoured memory foam pillow with a cooling cover. The contour has a dip for your head and a raised ridge for your neck. It supports the curve of your neck without pushing your head up.

What Actually Matters

Your sleeping position decides the pillow height:

• Back sleeper: medium loft, about 4 to 5 inches
• Side sleeper: thicker, about 5 to 6 inches, to fill the gap between ear and shoulder
• Stomach sleeper: very thin, almost flat

Do not buy the “one size fits all” pillow. They are a lie. Buy for your position.

Things I Got Wrong

I ignored the return policy. Pillow one had a 30-day trial and I kept it past the window, so I was stuck with it. Buy pillows with a trial period, and test them for a week before you commit.

I judged the pillow in the store. A pillow feels different after eight hours than it does for thirty seconds on a shelf. You have to sleep on it to know.

I did not wash the pillow. New pillows carry manufacturing smells, and a washable cover is essential. Check the care label before you buy.

The Test

Lie down and have someone check your profile, or use a mirror. Your ear, shoulder, and hip should line up. If your ear drops toward the mattress, the pillow is too flat. If your ear is higher than your shoulder, it is too thick.

Three pillows and four months later, I finally understand what people mean when they say a pillow supports you. My neck is quiet now, and my third pillow was the only one worth keeping.