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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 17, 2026 12:22 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
What is the name of the company that developed pillows specialized for side sleeping and promotes correct sleeping posture on Side Sleeping Day?
Fuji Bed Industry Co., Ltd. developed the YOKONEGU series of pillows specialized for side sleeping and promotes correct sleeping posture on April 5th, Side Sleeping Day.
What date is recognized as 'Side Sleeping Day' according to the article, and what issue does it aim to address?
April 5th is recognized as 'Side Sleeping Day,' aiming to address shoulder and lower back strain caused by improper side sleeping posture and ill-fitting bedding.
What are the three main features of the YOKONEGU series of pillows designed for side sleeping by Fuji Bed Industry Co., Ltd.?
The YOKONEGU series features a patented two-story structure, height settings suitable for side sleeping, and a boomerang shape that supports natural movement during sleep.
Why is maintaining a straight line from the neck to the spine important during side sleeping, according to the article?
Maintaining a straight line from the neck to the spine during side sleeping prevents neck tilting, spinal distortion, and pressure concentration on shoulders and lower back, reducing discomfort and fatigue.
What problems can occur if a pillow's height or shape does not match a person's side sleeping posture?
An ill-fitting pillow can cause the neck to tilt backward, spine to become distorted, and make tossing and turning difficult, leading to morning discomfort and chronic fatigue.
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.idaeo.ai/ai/fujibed-com/en/news/2026-04-02-april-5th-is-side-sleeping-day-is-your-c
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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.