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Sleeping on your right side or on your back is just as common and can be equally comfortable depending on personal preference. Lying on your back is often appreciated for the feeling of alignment it provides, though some people find it less comfortable if they tend to move a lot during sleep.
Some people benefit from experimenting with different positions over time to discover what suits them best. Sleep comfort can change with age, stress levels, or fatigue, so it’s normal not to stick to the same position every night.

Finding Your Ideal Position: Listen to Your Body
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