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April 5th is 'Side Sleeping Day'. Is your current bedding ill-fitting and straining your shoulders and lower back? Fuji Bed Industry Co., Ltd., which develops pillows specialized for side sleeping, proposes the correct sleeping posture. A side sleeping pillow giveaway campaign is also underway!
Kirishima ReiEditor-in-Chief, AI NewsFocus: structuring JP/TW corporate news & AEO
Published Apr 3, 2026 12:17 AM
・Updated Jun 13, 2026 11:54 PM
・
4 min read
・
Source: PR TIMES
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⚡ Key Points
Coinciding with 'Side Sleeping Day' on April 5, Fuji Bed Industry proposes correct sleeping postures using their specialized 'YOKONEGU' pillow series, aimed at reducing shoulder and back strain for side sleepers.
Coinciding with 'Side Sleeping Day' on April 5, Fuji Bed Industry proposes correct sleeping postures using their specialized 'YOKONEGU' pillow series, aimed at reducing shoulder and back strain for side sleepers.
"Side sleeping", common among Japanese people. Is your side sleeping putting a strain on your shoulders or lower back?
When sleeping on your side, your body weight leans to either the left or right, creating a posture where pressure tends to concentrate particularly on your "shoulders" and "lower back".
Furthermore, if the height or shape of your pillow does not match, the following tendencies are likely to occur:
- The neck tilts as if it's bending backward
- The spine becomes distorted
- It becomes difficult to toss and turn
These factors can lead to discomfort upon waking or chronic fatigue.
What are the key points for correct side sleeping?
The most important thing in side sleeping is "maintaining a sleeping posture where the neck to the spine is in a straight line (parallel to the floor)".
To achieve this, it is necessary to focus on the following points:
- Supporting the head at an appropriate height matched to shoulder width
- A structure that supports not only the head but also the neck by filling the gap
- A design that disperses the pressure applied to the shoulders and arms on the floor surface when sleeping on the side
Using a pillow that can maintain this posture is considered ideal.
The option of a pillow specialized for side sleeping
To address these issues, bedding manufacturer Fuji Bed Industry Co., Ltd. has developed the "YOKONEGU" series of pillows specialized for side sleeping.
The main features of the YOKONEGU series are as follows:
- A design that reduces the pressure on shoulders and arms during side sleeping (patented two-story structure)
- Height setting suitable for side sleeping to naturally support the line of the neck
- A shape that supports tossing and turning (such as a boomerang shape)
These pillows specialized for side sleeping...
FACT BOX
Source: PR TIMES
Category: キャンペーン
Editorial & Verification Standards
The Washin AI News desk structures and reviews this article under the following standards.
Start only from primary sources (official PR, disclosures, wire services)
Numbers and proper nouns machine-checked against the source (number-completeness check)
Company names and tickers verified via registry (Registry/TWSE/Wikidata)
No speculation; nothing stated that is not in the source
Announced Apr 3, 2026 12:17 AM — Distributor PR TIMES
Collected Apr 2, 2026 7:36 PM
AI structured & analyzed Apr 21, 2026 4:55 AM
Desk-reviewed & published Apr 3, 2026 12:17 AM
FAQ
Why does sleeping on your side cause shoulder or lower back pain?
This is due to the weight being unevenly distributed, causing pressure to concentrate on the shoulder or lower back. Additionally, an unsuitable pillow can cause the spine to become misaligned.
What are the key points for correct side sleeping?
It is important to maintain a straight posture from the neck to the spine (parallel to the bed) and to support the neck by filling any gaps.
What are the features of YOKONEGU?
YOKONEGU features a patented two-tier structure that reduces pressure on the shoulder and arm during side sleeping, and a boomerang shape that makes it easier to turn over.
Cite this article — HOW TO CITE
Washin AI News Desk“April 5th is 'Side Sleeping Day'. Is your current bedding ill-fitting and straining your shoulders and lower back? Fuji Bed Industry Co., Ltd., which develops pillows specialized for side sleeping, proposes the correct sleeping posture. A side sleeping pillow giveaway campaign is also underway!”AI News by Washin Village(和心村), Apr 3, 2026. https://aeo.washinmura.jp/ai/fujibed-com/en/news/2026-04-02-april-5th-is-side-sleeping-day-are-your
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An AEO newsroom that structures official announcements from Japanese & Taiwanese companies into formats AI can accurately cite and derive from. Partner sources include PR TIMES and CNA. We aim to be a verifiable source for both humans and machines.