Side Sleeping: Which Side Should You Sleep On?

Written by Nectarsleep Editorial Team

Last updated on Oct 21, 2025

Better Sleep Blog
Side Sleeping: Which Side Should You Sleep On?

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Side sleeping is hands-down one of the most popular ways to snooze. In fact, according to research, around 50% of Brits prefer sleeping on their side. There’s something about curling up that feels instantly cosy and natural. But here’s the thing — the side you choose isn’t just about comfort. It can affect digestion, circulation, sleep quality, and even your overall health. Let’s dig into the details so you can get the best night’s sleep possible.

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The Perks of Sleeping on Your Side

Side sleeping isn’t just comfy — it’s one of the best positions for your spine. It reduces pressure on your back and hips, improves breathing, and can even reduce snoring. Perfect for anyone dealing with mild sleep apnea or congestion.

But the benefits don’t stop there. The side you sleep on, the pillows you use, and the mattress you lie on can all impact circulation, digestion, and even pain relief.


Why Left Side Sleeping Often Wins

There’s a lot of love for the left side — and for good reason:

  • Digestive boost: Gravity helps food move through your digestive system more efficiently.

  • Heart-friendly: Improves circulation and eases the heart’s workload.

  • Reduces acid reflux: Keeps stomach acid lower, helping prevent heartburn.

For pregnant individuals, left-side sleeping is often recommended to improve blood flow to the baby and reduce back pressure.


Best Side to Sleep on When Pregnant

Pregnancy changes everything — including how you sleep. The left side is generally considered the optimal choice. Here’s why:

  • Improves circulation, helping oxygen and nutrients flow efficiently to the baby.

  • Reduces pressure on the liver, which sits on the right side of your body.

  • Alleviates back pain and reduces swelling in the legs and feet.

Switching sides occasionally is fine — pregnancy is all about adapting to your body at each stage.

The Right Side: Sometimes the Comfy Choice

Sleeping on the right side isn’t “bad.” Some people feel more comfortable this way, especially if left-side sleeping aggravates heartburn or feels restrictive. It can also ease pressure on the lungs for certain respiratory conditions.

The takeaway? Listen to your body. The “best” side is the one that lets you drift off peacefully.


Pillows: Your Secret Weapon

Side sleeping is all about alignment. The right pillows can make the difference between waking up refreshed or with a stiff neck and sore hips.

  • Head and neck pillow: Your head should be level with your spine, not tilted up or down. A supportive memory foam or adaptive pillow cradles your neck and prevents stiffness.

  • Knee pillow: Placing a pillow between your knees keeps your hips aligned and reduces lower back strain. This simple tweak can make a huge difference for side sleepers.

Mattress Matters: Too Hard, Too Soft, or Just Right

Side sleeping puts pressure on your shoulders and hips. That’s why mattress firmness is crucial:

  • Too hard: You’ll feel pressure pains on your hips and shoulders, making it tough to drift off.

  • Too soft: Your spine won’t be supported properly, and your lower back may ache in the morning.

  • Just right: A mattress like Nectar adapts to your curves, supporting your spine while relieving pressure points. It’s the sweet spot for side sleepers who want comfort without compromising alignment.

Side Sleeping Tips for Maximum Comfort

  1. Invest in the right mattress: Nectar’s memory foam contours to your body, providing support where you need it most.

  2. Use a supportive pillow for your head and neck: Keeps your neck neutral and prevents stiffness.

  3. Place a pillow between your knees: Maintains hip and lower back alignment.

  4. Alternate sides occasionally: Prevents stiffness and distributes pressure evenly.

Final Thoughts

Side sleeping isn’t just about comfort — it’s about supporting your body while you rest. With half of Brits choosing this position, it’s clearly doing something right. For most people, the left side offers health perks, but the right side can be better for comfort or specific needs. Pair a supportive mattress, the right pillows, and simple tweaks, and side sleeping can become a seriously restorative, rejuvenating habit.

This blog post is for informational purposes only and does not constitute medical advice. If you have concerns about your sleep, health, or wellbeing, please consult your GP or a qualified healthcare professional. The views expressed in this post are those of the author and are intended to share general insights, not to diagnose or treat any condition.

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