The science of sleep suggests your favorite position might be hurting you

Science · Published 13 October 2026 Swipe more like this →

In short: We spend a third of our lives asleep, a vital period for bodily repair. However, the position you choose to rest in can dictate your respiratory health, spinal alignment, and even blood flow. While some positions feel comfortable, they may be actively compromising your body's ability to recharge.

According to experts at the Mayo Clinic, the 'best' position is often context-dependent, but side sleeping is frequently highlighted as a superior general choice. To diminish snoring, lying on one's side can stop the respiratory passage from closing. For those who are pregnant, particularly in the third trimester, sleeping on the left side is specifically recommended. This occurs as it eases tension on inner organs while aiding circulation, unlike reclining on the back which allows the uterus to squeeze the arterial system and inferior vena cava.

Conversely, common habits can lead to specific physical issues. Back sleeping is often favored because it removes weight from the joints, but it is considered one of the worst positions for individuals with sleep apnea. In this position, the tongue and jaw can fall downward, crowding the airway. On the other hand, while stomach sleeping can help keep the airway open, it often places significant strain on the neck and spine.

To optimize side sleeping, specialists suggest minor adjustments to manage mechanical stress. For those dealing with neck or back pain, the Sleep Foundation recommends placing a small pillow between the knees. Without this support, the stress of side sleeping can pull on the hip, potentially causing issues. For general comfort, some experts suggest slightly elevating the head while remaining on the side.

Ultimately, the nuances of sleep posture involve balancing respiratory needs with musculoskeletal support. While the 'perfect' position depends on individual health goals—such as managing apnea versus alleviating back pain—moving toward a side-sleeping posture with proper pillow placement offers a scientifically backed middle ground for many.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

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