The Best Sleeping Positions for Neck and Back Health: Evidence from Research

Many people wake up with stiffness or pain in the neck or lower back, not realising that their sleeping position could be a major contributor. Given that we spend roughly one-third of our lives asleep, the way we position our bodies overnight can significantly influence spinal alignment, muscle recovery, and long-term musculoskeletal health.

Physiotherapists often educate patients about posture during the day — but night-time posture matters just as much.

 

Why Sleep Position Matters for Spinal Health

The spine has three natural curves — cervical (neck), thoracic (mid-back), and lumbar (lower back). Proper alignment during sleep helps maintain these curves, reducing the mechanical load on muscles, ligaments, and intervertebral discs.

Research supports this:

• A 2017 study in PeerJ found that maintaining neutral spinal alignment during sleep can help reduce spinal stress and prevent morning stiffness (Gordon et al., 2017).

 

• Poor sleeping posture, particularly in prone (stomach) positions, has been associated with increased neck pain due to sustained rotation and extension (Szczygieł et al., 2020).

 

The Best Sleeping Positions According to Evidence

1. Supine (Back) Sleeping

Sleeping on your back allows for the most balanced distribution of body weight and supports natural spinal alignment.

Evidence:
A study published in Work found that supine sleepers generally experience less spinal deviation compared to side or prone sleepers (Leilnahari et al., 2011).

Using a small pillow beneath the knees can also help reduce lumbar lordosis, alleviating low back strain (Kendall et al., 2005).

Tips:

• Use a medium-firm pillow to support the neck’s natural curve.
• Add a small pillow under the knees to reduce lumbar pressure.
• Avoid if you have sleep apnea or snoring issues.

Best for: People with back or neck pain seeking spinal neutrality.

2. Side Sleeping

Side sleeping is the most common position and offers multiple health benefits, including improved airway patency and reduced reflux. For spinal health, it can be optimal — when done correctly.

Evidence:
A 2015 review in the Journal of Physical Therapy Science found that side sleeping with a pillow between the knees promotes better spinal alignment and reduces lumbar muscle strain (Kim et al., 2015).

Left-side sleeping may also improve circulation and digestion (Caggiari et al., 2021).

Tips:

• Use a supportive pillow to fill the gap between your shoulder and neck.
• Keep your knees slightly bent, not tightly curled.
• Place a pillow between your knees to align hips and reduce lower back stress.

Best for: People with lower back pain, hip discomfort, or sleep apnea.

3. Avoid Stomach Sleeping (Prone Position)

Although some find it comfortable, stomach sleeping often leads to neck rotation and excessive lumbar extension, which can cause or worsen pain.

Evidence:
Studies show that prone sleeping increases cervical rotation and compressive loading on lumbar structures (Szczygieł et al., 2020; Gordon et al., 2017). Over time, this may lead to muscle imbalance and disc strain.

Tips if you must sleep this way:

• Use a very thin pillow or none at all under your head.
• Place a small pillow under your abdomen to reduce lumbar extension.

 

Additional Sleep and Spine Health Tips

• Choose a supportive mattress: Medium-firm mattresses generally reduce back pain and improve sleep quality (Radwan et al., 2015).
• Optimize pillow height: A pillow that’s too high or low can increase cervical strain.
• Stretch before bed: Gentle mobility exercises help reduce muscle tightness and improve circulation.
• Maintain good sleep hygiene: Consistent sleep schedules and stress management support muscle recovery.

 

When to Seek Professional Advice

If you regularly wake up with neck or back pain, the issue may not be your mattress alone. A physiotherapist and/or chiroprator can assess your posture, muscle balance, and sleep setup to provide personalised ergonomic and exercise recommendations for better spinal health and sleep quality.

 

Key Takeaway

The best sleeping position is the one that keeps your spine in neutral alignment — usually on your back or side — with appropriate support for your head, neck, and legs.
Making small adjustments to your sleep setup can go a long way toward reducing pain and improving your overall wellbeing.

 

References

• Caggiari, G., et al. (2021). Body posture during sleep: Physiological and clinical implications. European Spine Journal, 30(5), 1112–1120.
• Gordon, S. J., Grimmer-Somers, K. A., & Trott, P. H. (2017). Sleep position, age, gender, sleep quality and waking cervical pain in the general population. PeerJ, 5, e2766.
• Kim, J., Shin, H., & Lee, W. (2015). The effects of pillow height on the muscle activity of the neck and shoulder muscles during side-lying position. Journal of Physical Therapy Science, 27(10), 3227–3230.
• Leilnahari, K., Fatouraee, N., Khodalotfi, M., Sadeghein, M. A., & Kashani, R. A. (2011). Sleep positions and spinal alignment: A biomechanical study. Work, 38(4), 355–361.
• Radwan, A., Fess, P., James, D., & Murphy, J. (2015). Effect of different mattress types on sleep quality and musculoskeletal pain in adults. Applied Ergonomics, 50, 158–166.
• Szczygieł, E., et al. (2020). The influence of sleep positions on musculoskeletal pain and spinal alignment. BMC Musculoskeletal Disorders, 21, 639.
• Kendall, F. P., McCreary, E. K., Provance, P. G., Rodgers, M. M., & Romani, W. A. (2005). Muscles: Testing and Function with Posture and Pain. 5th ed. Lippincott Williams & Wilkins.