Have you ever noticed that you always fall asleep on the same side?

For some people, the right side feels naturally comfortable. They curl up slightly, place one arm beneath the pillow, bend their knees, and fall asleep almost immediately. Others may start on their back or left side but eventually roll onto their right side without realizing it.

Because sleep occupies such a large part of our lives, it's reasonable to wonder whether this habit affects the body over time.

You may have heard that sleeping on the right side is bad for your heart, causes digestive problems, or should always be avoided in favor of the left side. At the same time, some people claim that right-side sleeping is completely harmless and may even have certain advantages.

The reality is much less dramatic.

For most healthy adults, sleeping on the right side is not inherently unhealthy. There is no universal rule saying everyone should sleep on the left. Your preferred sleeping position depends on your anatomy, health conditions, comfort, mattress and pillow setup, and the quality of your sleep.

However, sleeping on the right side can affect certain symptoms—particularly acid reflux, breathing, shoulder and hip pressure, and spinal alignment.

In some situations, switching sides may make you more comfortable. In others, there may be no reason to change at all.

Here's what you should know if the right side is your favorite sleeping position.

1. Right-Side Sleeping Is Not Automatically Bad for You

Let's start with one of the biggest misconceptions.

If you regularly sleep on your right side, you don't need to assume that you're damaging your organs or putting your health at risk.

For most healthy adults, side sleeping is a perfectly reasonable way to sleep.

In fact, side sleeping can have practical advantages.

It may help some people breathe more comfortably than sleeping flat on their backs. It can reduce the tendency for the tongue and soft tissues of the throat to fall backward, which may help reduce snoring or airway obstruction in some individuals.

Side sleeping can also be comfortable for people who experience back discomfort when lying flat.

The key issue is not simply which side you choose.

It's whether that position allows you to:

• Breathe comfortably

• Sleep continuously

• Avoid significant pain

• Maintain reasonable spinal alignment

• Avoid worsening symptoms such as reflux

• Wake feeling rested

If you sleep on your right side every night and wake up feeling comfortable and refreshed, there may be no medical reason to force yourself onto the left.

2. The Right Side May Affect Acid Reflux

One of the most important differences between right- and left-side sleeping involves acid reflux.

If you experience nighttime heartburn, your sleeping position may have a noticeable effect on your symptoms.

Acid reflux occurs when stomach contents move backward into the esophagus.

Because the esophagus isn't designed to handle repeated exposure to stomach acid, reflux can produce:

• Burning in the chest

• Sour or bitter taste

• Regurgitation

• Burping

• Throat irritation

• Coughing

• A feeling of food coming back up

Symptoms can become worse when you're lying down because gravity is no longer helping keep stomach contents in the stomach.

Why might the right side make reflux worse?

The stomach is positioned primarily on the left side of the upper abdomen.