Sleep Position and Mattresses: The Right Choice Guide

Your sleep position is one of the most important criteria for choosing a suitable mattress. Poor spinal alignment during the night can lead to back pain, morning stiffness, and poor sleep quality. Here is our complete guide.

The 3 Sleep Positions and Their Implications

There are mainly three sleep positions, each with different needs in terms of firmness and support.

Sleeping on Your Back (about 10-15% of sleepers)

The back sleeping position is often cited by sleep experts as the reference position for spinal health. It allows for:

Natural alignment of the spine
Even distribution of body weight
Less pressure on the joints

Disadvantages: Encourages snoring and can worsen sleep apnea.

Recommended mattress: Medium to firm (6-7/10). The mattress should support the lumbar area without allowing it to sag. A mattress that is too soft creates excessive sinking at the lower back.

💡 Tip: Place a pillow under your knees to reduce lumbar pressure when sleeping on your back.

Sleeping on Your Side (about 60-70% of sleepers)

This is the most common position. It is particularly beneficial for:

Digestion (left side preferred)
Pregnant women (left side recommended)
Reducing snoring

Disadvantages: Can create pressure points on the shoulders and hips, and may promote neck pain if the pillow is not suitable.

Recommended mattress: Soft to medium (3-6/10). The mattress should allow the shoulder to sink slightly and align the hips with the spine.

💡 Tip: Place a pillow between your knees to maintain hip-spine alignment.

Sleeping on Your Stomach (about 10-15% of sleepers)

This is the least recommended position by health professionals. It:

Twists the neck (forced to turn to the side)
Excessively arches the lower back
Compresses internal organs

If you sleep on your stomach, opt for a firm mattress (7-8/10) to avoid lumbar hyperextension. Avoid mattresses that are too soft, which worsen abdominal sinking.

⚠️ Health advice: If you have neck or lower back pain, try gradually transitioning to the side sleeping position.

Summary Table: Position × Recommended Firmness

Position	Recommended Firmness	Suitable Mattress Type
On the back	Medium to firm (5-7/10)	HR foam, pocket springs
On the side	Soft to medium (3-6/10)	Memory foam, hybrid
On the stomach	Firm (7-8/10)	Bonnell springs, firm latex
Mixed (changing)	Medium (5/10)	Hybrid or versatile foam

Body Type and Sleep Position: The Combination to Know

The sleep position alone is not enough. Your weight and body type modify the needs:

People under 60 kg

On the back: medium mattress (5/10) sufficient
On the side: soft mattress (3-4/10) to allow the shoulder to sink
On the stomach: medium-firm (6/10)

People between 60 and 90 kg (standard body type)

On the back: medium to mid-firm (5-6/10)
On the side: medium (5/10)
On the stomach: firm (7/10)

People over 90 kg

On the back: firm (7-8/10) - the mattress must withstand the weight to maintain alignment
On the side: mid-firm (6/10) with good comfort depth
On the stomach: very firm (8-9/10)

How Mattress Types Meet Position Needs

Memory Foam

Ideal for: side sleepers, couples
⚠️ Less suitable for: hot sleepers, stomach sleepers

Memory foam perfectly conforms to the body's curves, eliminating pressure points on the shoulders and hips. Perceived firmness: soft to medium.

Natural Latex

Ideal for: back sleepers, allergy sufferers
⚠️ Less suitable for: tight budgets

Latex offers excellent dynamic support (quick rebound) that suits back sleepers well. Available firmness: soft to very firm.

Pocket Springs

Ideal for: couples, hot sleepers, mixed sleepers
⚠️ Less suitable for: very light sleepers (little sinking)

Pocket springs allow for good ventilation and deep support. Models with differentiated zones offer tailored support according to body areas.

Hybrid (foam + springs)

Ideal for: mixed sleepers, couples with different profiles
⚠️ Less suitable for: small budgets

Combines the comfort of foam (or latex) on the surface with the support of springs underneath. The ultimate versatile solution.

Couples: Managing Two Different Sleep Positions

When one sleeps on their back (needs firmness) and the other on their side (needs softness), choosing a mattress becomes tricky. Several solutions:

Option 1: Split Mattress (dual firmness zone)

Some brands offer mattresses with two independent zones (each half has its own firmness). This is the ideal solution but often expensive (starting from EUR1000).

Example: Technogel Dual, some Tempur Duo models

Option 2: Versatile Medium Mattress

A medium mattress (5/10) is generally acceptable for both positions if the body types of both sleepers are not too different.

Good option: Emma Original, Tediber (versatile medium)

Option 3: Two 90cm Mattresses Side by Side

For king-size beds (180 cm), place two 90 cm mattresses side by side with independent bedding. Each chooses their own firmness.

Pillow and Sleep Position: The Other Half of the Equation

The mattress alone is not enough. The pillow completes the system and must be adapted to your position:

Position	Pillow Height	Pillow Firmness
On the back	Low (8-10 cm)	Medium
On the side	High (12-15 cm)	Firm
On the stomach	Very low or none	Soft

Our Recommendations by Profile

Back Sleeper, Standard Body Type

-> Our pick: Emma Original - versatile medium, excellent lumbar support, 100-night trial

Side Sleeper, Sensitive to Pressure Points

-> Our pick: Tempur Original - viscoelastic foam, pressure point elimination, premium

Mixed Sleeper, Couple

-> Our pick: Simba Hybrid - pocket springs + foam, versatile, excellent for couples