The person sleeps with the head and torso lying on the left side, also known as the lateral position. The arm may be under the body, or perhaps slightly forward or extended, with some pressure on the left shoulder.
The legs can be stacked on top of each other, the left leg is at the bottom. In the snuggled fetus position, the legs are bent and the knees are raised toward the upper body.
Most people who sleep in this position avoid the problems associated with sleeping on their backs, and their breathing may improve. It is a good option to limit the effects of snoring and sleep apnea.
If the pain is in your right shoulder or hip, you may find it easier in this position. Sleeping on your side can also make it easier to "lie down" with your bed partner.
A pregnant woman can place a pillow under her belly or between her knees, and she will find that this position relieves her back pain and any pressure on her bladder.
The left side position is not for everyone. When you sleep on the left, the chest organs can move under the influence of gravity. The lungs can seriously affect the heart.
This increased pressure can affect heart function, increasing stress on the heart in heart failure. This, in turn, may mean that the kidneys are increasing their productivity, leading to an increase in the number of attempts to get up and urinate at night.
Pressure on the nerves in the left arm or leg can cause other problems. Sleeping in this position can contribute to long-term shoulder, lower back, and hip pain.