Benefits of Sleeping on the Left Side of Your Body

When you sleep on your left side, you're helping a lot of your organs stay healthy because it makes their jobs easier. For example, sleeping on this side helps improve your circulation and digestion.
Benefits of Sleeping on the Left Side of Your Body
Valeria Sabater

Written and verified by psychologist Valeria Sabater.

Last update: 27 May, 2022

What side of the body do you usually sleep on? On the right or the left? Or are you one of those people sleeps facing up? Experts say that sleeping on the left side of your body is actually best for your health. Read on to learn why!

5 benefits of sleeping on the left side of your body

Did the title of this article surprise you? Until now, you might never have stopped to think about whether sleeping in one position or another could be better or worse for you. Well, it looks like it really is important.

Honestly, Eastern medicine has been telling us for a long time that we should all be sleeping on the left side of our body. Plus, in a recent study published in The Journal of Clinical Gastroenterology, Dr. John Doulliard explains a few simple principles to explain why this is the case.

We’re going to give you a short summary so that you can put his advice into practice. We’re confident you’ll be convinced.

1. For proper lymphatic drainage

Dr. Doulliard says that sleeping on the left side of your body is the most natural position. It’s the dominant side of the lymphatic system. The l ymphatic system carries important elements like proteins, glucose, metabolites and any other elements that need to be filtered by the lymph nodes.

Well, this system also drains on the left side. But that’s just the first reason to sleep on the left side of your body.

2. For anatomical reasons

You may not know this, but both the stomach and the pancreas are more on the left side of the body. If you sleep on this side, you’re helping your body digest better. It helps your stomach channel its gastric juices and helps your pancreas secrete important enzymes.

So, it helps your digestion progress little by little, instead of all at once, which is what happens if you sleep on your right side.

3. For your heart health

benefits of sleeping on the left side of your body

Are you surprised? Probably. This study also says that over 80% of the heart is on the left side of the body. By simply sleeping on the left side of your body, you give it simple, natural benefits — mostly because of the fact that the lymphatic system drains more easily in this position.

It’s also good to keep in mind that the aorta exits your heart making an arc to the left to reach the abdomen. So, if you sleep on the left side, it will help your heart work better, pumping blood more readily. That sounds good, doesn’t it?

4. Do you take naps?

If you’re a big napper, or just feel like you need to after eating a lot, then remember to sleep on your left side. This is good for your digestion and you’ll get up more alert, less tired, and without a stomach ache. Try it out and see how good you feel after a short nap on the left side of your body.

5. For your spleen health

woman sleeping on the left side of her body

The spleen is also on the left side of the body. This organ is also a basic part of the lymphatic system, because its job is to filter the blood.

If you sleep on the left side of your body, you’ll help direct fluids to the spleen in a simpler way, which is good for your body’s natural sense of gravity. The lymphatic system does most of its work on this side.

So now you know, it’s best for your health to sleep on the left side of your body as often as you can. How about trying it tonight?


All cited sources were thoroughly reviewed by our team to ensure their quality, reliability, currency, and validity. The bibliography of this article was considered reliable and of academic or scientific accuracy.


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This text is provided for informational purposes only and does not replace consultation with a professional. If in doubt, consult your specialist.