How to sleep so your back does not hurt in the morning
We spend a third of our life asleep and the spine stays in one position for hours. When that position is wrong, the body is loaded instead of recovering – and you feel it in the morning.
The kindest positions for the back are sleeping on your back with a small pillow under the knees, or on your side with a pillow between the knees. The mattress should keep the spine in a straight line – neither sagging nor board-hard – and the pillow should fill the gap between head and shoulder.
Sleeping on your back
This distributes weight most evenly. A small pillow or rolled blanket under the knees releases the lumbar spine and prevents it from arching. The head pillow should be low so the chin does not point towards the chest.
Sleeping on your side
Suitable for most people, including pregnancy (the left side is recommended). The key is a pillow between the knees – without it the upper leg falls across the body and rotates the pelvis. The head pillow must fill the whole gap between head and shoulder.
Sleeping on your stomach
The least favourable position for the spine: the head stays turned to one side all night and the lower back arches. If you cannot fall asleep otherwise, try a thin pillow under the pelvis and none under the head.
Mattress and pillow
- Medium firmness suits most people; a very soft mattress lets the pelvis sink.
- Test: lying on your side, the spine should form a straight line, not a curve.
- Choose the pillow by shoulder width, not by habit – higher for side sleeping, lower on the back.
- A sagging mattress older than ten years causes morning pain more often than people expect.
When to see a professional
If pain persists after changing the mattress and position, wakes you at night or radiates into the limbs, it is a signal for an assessment. At ChiroMiro in Prague 8 we first go through the intake questionnaire and contraindications, and only then choose a suitable approach.
Key takeaways
- Best positions: on the back, or on the side with knee support.
- Stomach sleeping loads the neck most because the head stays rotated.
- A mattress should support, not create a hollow – replace it roughly every 8–10 years.
- Morning stiffness that eases within 15 minutes is common; persistent pain is not.
Frequently asked questions
Is a firm or a soft mattress better?
Medium firmness works for most people. What matters is that the spine stays in a straight line – both too firm and too soft disturb that line.
Why does my back hurt mainly in the morning?
The body does not move overnight and tissues stiffen. Brief morning stiffness of up to 15 minutes is common; if pain persists or grows, have it assessed.
Does sleeping without a pillow help?
Only for some stomach sleepers. When sleeping on the side or back, the missing support overloads the cervical spine instead.
Would you like to discuss it in person?
ChiroMiro – Miroslav Kliment, Na Šilbochu 2392/2, Prague 8 (Čimice). Appointments by phone, usually within a few days.
This text is informative and does not replace a medical examination or diagnosis. With acute or worsening pain, please contact your physician.
