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Understanding the Differences in Sleep Temperature Between Genders

September 3rd is celebrated as 'Autumn Sleep Day,' and surprisingly, around 65% of people are unaware of the importance of sleep temperature—an essential factor for quality rest. A recent survey conducted by Koala Japan, involving 500 men and women across the nation, delves into this topic, revealing significant gaps in understanding between genders.

As the summer heat fades, the transition into autumn brings about a notable variation in daytime and nighttime temperatures, complicating the maintenance of a comfortable sleeping environment using air conditioning alone. Koala Japan, headquartered in Shibuya, Tokyo, seeks to highlight and address these challenges through their recent survey on sleep temperature perception and preferences.

The Sleep Temperature Gap: A Gender Divide

Often, it is stated that women tend to suffer from issues like 'chilliness and dryness,' whereas men often deal with 'sweating and overheating' during sleep. This common understanding is validated through the findings of the survey, highlighting a stark disparity in how men and women experience discomfort during the night.

Key Survey Findings:

1. A staggering 65% of participants acknowledge they lack knowledge about the significance of sleep temperature. While air conditioning is the preferred method to create a comfortable environment for nearly 28.4% of the respondents, only a mere 8% reported adjusting their bedding for optimal warmth.

2. The hidden discomforts related to air conditioning usage show a distinct gender divide. Approximately 31% of women reported feeling cold, compared to 17% of men, who primarily complained about excessive sweating. The discomfort indicators include:
- Coldness localized to certain parts of the body: 23.2% (31.1% women, 14.7% men)
- Dryness of throat and skin: 25.4% (28.4% women, 22.1% men)
- Sweating: 14.8% (12.2% women, 17.6% men)
- Overheating in the back or waist: 12% (10.8% women, 13.2% men)

Female respondents overwhelmingly report feeling cold significantly more than their male counterparts, alongside concerns about dryness. Conversely, men face issues with sweating or overheating, indicating that achieving a comfortable sleep temperature for both genders at the same setting is challenging, which may ultimately diminish their sleep quality.

3. Realizing the concept of sleep temperature proved vital. Once participants grasped the importance of maintaining comfortable bedding temperature, about 60% recognized their need for appropriate temperature management in their sleeping spaces. Moreover, 43% declared they would focus on 'temperature performance' when purchasing bedding in the future.

Consumer Preferences in Mattresses

The survey also explored what features consumers value most in their mattresses. High breathability and the capability to maintain a comfortable nighttime temperature stood out among women's preferences, underscoring the need for products that address varying temperature requirements throughout the seasons.

Koala's Solution: PolarBands® Technology

To tackle these intertwined gender-based temperature issues and air conditioning disagreements that partners may face, Koala emphasizes the need to enhance bedding itself for optimal temperature regulation. Introduced recently, the 'Koala Mattress PLUS PolarBands®' features innovative technology that allows for efficient heat retention and dispersion.

• - Price range: Starting from ¥119,900 for a single to ¥169,900 for a king size (tax included).
• - Unique Features: The mattress can sustain a cooler sleeping environment, up to 5 degrees cooler for six hours compared to standard mattresses, actively combatting issues like heat retention in men and coldness in women.

Experience the Coolness at Tokyo Station!

Koala invites you to experience their 'ice mattress' at the ongoing 'Yaesu Night Market 2026,' from August 28 to September 6. Attendees can try out the mattress while enjoying the coolness it provides.

Conclusion: The Importance of Sleep

In a country recognized for having shorter sleep durations, Koala is committed to enhancing sleep quality nationwide. Understanding and addressing gender differences in sleep preferences is paramount, especially as seasons change. The pursuit of better sleep is one that Koala embraces with innovative products, ensuring everyone can enjoy their own perfect sleeping temperatures together.