【NELL Sleep Brand Survey】Top Cause of Children's Summer Vacation Late Nights is Not Smartphones, But 'Disrupted Routines'! Overlooked Blind Spot: 'Neglected Bedding'?

NELL (Neru), a sleep brand operated by Morght Co., Ltd. (headquartered in Minato-ku, Tokyo), conducted a survey titled 'Reality Check: Children's Sleep During Summer Vacation' targeting parents of elementary and junior high school students ahead of the summer break.

The 'problem of children staying up late' is often considered a seasonal phenomenon during summer vacation. Contrary to common belief, 'smartphones' were not the top culprit—instead, the leading cause was identified as 'disrupted daily routines due to summer vacation.' Furthermore, a critical blind spot emerged: 73.2% of households have not replaced their children's bedding in over three years, a factor significantly impacting sleep quality.

Key Survey Findings

【Unexpected Cause】 The top reason for late nights is not smartphones (23.0%) but 'disrupted routines during summer vacation' (25.1%).

【Daily Reality】 The biggest issue the morning after staying up late is 'taking a long time to wake up' (28.9%).

【Shocking Blind Spot】 73.2% of households have not replaced their children's bedding in over three years. 71.9% of parents were unaware that changing mattresses can shorten sleep onset time.

【Psychological Dilemma】 Despite recognizing bedding as a potential cause, only 16.7% of parents took action—less than half the rate of those implementing smartphone or video usage controls.

【Dramatic Effect】 84.1% of parents who replaced their children's bedding within the past 1–2 years reported improved sleep quality!

Detailed Survey Results

① Challenging Conventional Wisdom! The Top Cause of Late Nights is 'Disrupted Routines,' Not 'Smartphones'

While 'excessive smartphone or video use' is often blamed for children staying up late, the survey results show that 'disrupted daily routines during summer vacation' (25.1%) ranked first, surpassing smartphone use (23.0%).

The environmental shift of a long vacation itself appears to accelerate children's shift toward a nocturnal lifestyle. Additionally, the most common issue the morning after staying up late was 'taking a long time to wake up' (28.9%), increasing parental burden during busy morning routines.

② Over 70% 'Neglect Bedding for Over 3 Years.' 71.9% Are Unaware That Mattress Changes Can Speed Up Sleep Onset

When examining children's sleep environments, 73.2% of households reported not having replaced their children's bedding in over three years. Moreover, 71.9% of parents were unaware of the fact that 'changing mattresses (bedding) can shorten sleep onset time,' indicating low awareness of how bedding updates can facilitate smoother sleep onset for children.

③ The Parental Dilemma: 'Aware but Inactive'—Yet 84.1% See Results After Changing Bedding

Among parents who suspect their children aren't sleeping well due to their bedding, only 16.7% have actually taken measures such as replacing it. This is less than half the implementation rate for smartphone or video usage controls, highlighting that bedding is often deprioritized.

However, 84.1% of parents who replaced their children's bedding within the past 1–2 years reported 'improved sleep quality.' Compared to parents who replaced bedding over three years ago (58.1%), this represents a significant 26-point difference. Regular bedding reviews are clearly the most effective path to resolving children's sleep issues.

NELL's Recommendation: This Summer, Support Better Sleep with a 'Bedding Wardrobe Change'

Children's bodies are in a growth phase, with skeletons and weight changing daily. Continuing to use the same bedding for over three years may not only fail to accommodate physical changes but also cause discomfort and difficulty turning over, potentially hindering sleep onset (and encouraging late nights).

The 'NELL Mattress' uses industry-leading pocket coil technology to scientifically support children's free movement during sleep. Its superior pressure distribution shortens the time to fall asleep and promotes a refreshed awakening.

This summer, as a first step toward stabilizing daily routines, consider not only limiting smartphone use but also 'reviewing and updating your child's bedding.'

Survey Overview

Purpose: Reality check on children's sleep during summer vacation

Target: 235 parents (men and women aged 20s–50s) nationwide with elementary or junior high school children

Period: June 22–29, 2026

Method: Online survey

About NELL: A Sleep Brand Enhancing 'Sleep Recovery'

Launched in October 2020, NELL is a D2C sleep brand.

Believing the essence of sleep is 'preparation,' NELL aims to provide 'high-quality preparation = sleep' so individuals can perform at their best in daily life beyond sleep time. The company conducts research and development of sleep products accordingly.

・Official Website: https://nell.life/

About the Sleep Media 'WENELL (WeNell)'

'WENELL (WeNell)' was launched with the idea of comprehensively delivering helpful information to anyone experiencing sleep-related concerns, aiming to assist in resolving or alleviating various issues. We encourage users to try different actions based on the information provided by WENELL to discover bedding and routines that suit their individual needs.

・WENELL: https://nell.life/wenell/

Company Overview: Morght Co., Ltd.

Established: May 23, 2018

Representative: Koiki Doi, CEO

Business: Planning and sales of D2C sleep brand 'NELL' products

Head Office: 3rd MINAMI AOYAMA 6F, 3-1-34 Minami-Aoyama, Minato-ku, Tokyo

Capital: 33.12 million JPY

・Company Website

https://morght.com/

・Official Instagram

https://www.instagram.com/nell_mattress/

・Official X (formerly Twitter)

https://twitter.com/NELL_mattress

・Sleep Media 'WENELL (WeNell)'

https://nell.life/wenell/