This can be particularly noticeable if you have:

If your right hip repeatedly feels sore in the morning, consider changing your sleeping setup.

A mattress with appropriate pressure relief may help.

You can also place a pillow between your knees to improve alignment and reduce rotational stress through the pelvis.

And there's nothing wrong with changing sides during the night.

11. A Pillow Between Your Knees Can Make a Big Difference

If you're a dedicated right-side sleeper, one of the simplest changes you can make is adding a pillow between your knees.

When you lie on your side, your upper leg naturally tends to fall forward.

That can rotate your pelvis.

Over several hours, this position may contribute to discomfort in the lower back, hips, or pelvis.

A pillow between your knees helps support the upper leg and may keep the hips in a more neutral position.

You don't need an expensive specialty pillow.

A normal pillow can work.

Some people prefer a long body pillow because it provides support for the knees, abdomen, chest, and arms simultaneously.

12. Your Head Pillow Is Just as Important

Many people focus on their mattress while completely ignoring their pillow.

For side sleepers, the pillow is especially important.

Your shoulder creates a gap between your head and the mattress.

If the pillow is too thin, your head may tilt downward.

If it's too thick, your head may be pushed upward.

Either position can place unnecessary stress on the neck.

The ideal pillow should allow your head and neck to remain reasonably aligned with the rest of your spine.

There's no universally perfect pillow thickness because people have different shoulder widths, mattress firmness, body sizes, and preferences.

Instead, focus on alignment and comfort.

Sleeping on your side doesn't automatically harm your spine.

In fact, some people find side sleeping more comfortable than lying flat.