The right side of the body houses the liver, a large organ located beneath the ribs. When lying on the right side, some people may feel slight pressure in the chest area.
A possible result: a sensation of shallower breathing or lighter sleep. If you wake up feeling tired despite getting enough hours of sleep, your nighttime posture may be worth examining.
However, every body is different. Many people sleep perfectly well on their right side without experiencing any discomfort at all.
Natural drainage and sleeping position
You may sometimes hear that sleeping on the left side supports certain nighttime physiological processes due to the body’s internal anatomy.
That said, this is not a universal rule. The body has its own self-regulating abilities and can function efficiently regardless of the position you choose, as long as your sleep is deep and uninterrupted.
Overall sleep quality remains far more important than the specific side you fall asleep on.
In certain cases, a recommended choice
Interestingly, in some specific medical situations, sleeping on the right side may actually be recommended to improve nighttime comfort.