The Best Sleeping Positions for Lower Back Pain

You spend roughly a third of your life in bed. If your sleep position works against your spine, no amount of stretching during the day will fully fix the pain.

Here's how the common positions stack up.

Best: Side sleeping with a pillow between the knees

This keeps your hips, pelvis, and spine in a neutral line. Without the pillow, your top leg rotates forward and twists the lower spine all night.

How to do it well:

• A medium-firm pillow between the knees, from knee to ankle if possible
• Knees slightly bent (not curled into a tight ball)
• A pillow that keeps your head level with your spine — not too tall, not too flat

Good: Back sleeping with a pillow under the knees

If you're a natural back sleeper, slide a pillow under your knees to flatten the arch in your lower back. This is also the position most often recommended after lumbar surgery.

Acceptable: Fetal position

Curling slightly on your side opens up the space between vertebrae and can ease the pain of a herniated disc. Don't curl into a tight ball — keep it gentle, and switch sides occasionally.

Worst: Stomach sleeping

Stomach sleeping flattens the natural curve of your spine and forces your neck to rotate 90 degrees for hours. If you can't break the habit, put a thin pillow under your hips to reduce the strain.

Your mattress matters more than the brand claims

You don't need an expensive mattress — you need the right firmness for your body. As a general rule:

• Heavier bodies do better on firmer surfaces
• Lighter bodies do better on softer surfaces
• Side sleepers generally need more cushion at the shoulder and hip
• Back sleepers generally need more support through the lumbar curve

If your mattress is over 8 years old and you wake up stiff, it's likely part of the problem.

A quick night-time routine for back pain

1. Heating pad on the lower back for 10 minutes before bed
2. Knees-to-chest stretch, 30 seconds each side
3. Sleep on your side with a pillow between your knees
4. In the morning, roll to your side and push up — don't sit straight up from lying flat

Small changes, every night, add up fast.

Frequently asked questions

What is the best sleeping position for lower back pain?

Side-sleeping with a pillow between your knees is the most reliable choice for most people. It keeps the pelvis level and stops the top leg from rotating your spine overnight. Back-sleeping with a pillow under the knees is a close second.

Is sleeping on your stomach bad for your back?

For most people with lower back pain, yes. Stomach sleeping extends the lower back and forces your neck into rotation for hours. If you cannot break the habit, place a thin pillow under your hips to reduce the arch.

Should my mattress be firm or soft for back pain?

Medium-firm suits most back pain sufferers. Too soft lets the hips sink and the spine sag; too firm creates pressure points at the shoulder and hip. If your mattress is sagging or over eight years old, that is often the real problem.

Why does my back hurt more in the morning?

Overnight your discs rehydrate and your tissues stiffen, so the first movements of the day feel worst. Rolling to your side and pushing up, rather than sitting straight up, plus a few minutes of gentle movement usually settles it.