Air Conditioning & Sleep
2025-06-30 04:56:38

Can You Truly Sleep Well With the Air Conditioner On? Discover What 70% Prefer.

The Impact of Air Conditioning on Sleep Quality During Summer



As summer temperatures in Japan intensify and tropical nights become more common, many people are turning to air conditioning in their quest for comfortable sleep. Recently, the wellness brand mariness conducted a nationwide survey focusing on the relationship between the sweltering heat and sleep quality. The survey aimed to uncover the secrets of a good night's sleep during these increasingly harsh summer months.

The Survey Details


On June 19, 2025, mariness collaborated with PRIZMA to survey over 1,000 participants aged between 20 and 50 regarding their experiences with summer heat and its effects on sleep. The results were alarming: about 90% of respondents felt that Japan’s summers are becoming more like those in tropical climates.

Changing Perspectives on Summer Heat


When asked if they feel Japan is becoming subtropical due to the heat, 56.1% reported feeling it very strongly, while 30.9% felt it somewhat. Responses revealed a striking awareness of the rising temperatures, with many associating these changes with their experiences of sweltering summer nights. Participants noted rising temperatures throughout the day, as well as warm nights where cooling off seemed impossible.

  • - Increased Awareness: Participants noted that summer heat now feels oppressive, leading to a dramatic shift in how they view their sleeping conditions. Many shared personal anecdotes emphasizing the discomfort of sleepless nights due to the heat.
  • - Anecdotal Evidence: From young adults waking up in the middle of the night to find themselves in just their underwear due to heat, to older individuals resorting to sleeping on the floor in air-conditioned rooms, the struggles are widely shared.

Sleep Quality and Air Conditioning


With over 80% of respondents experiencing difficulty sleeping due to high temperatures, the dependency on air conditioning appears to be growing. However, does relying on air conditioning guarantee better sleep? Many reported experiencing symptoms like fatigue, dry throat, or cold extremities when sleeping with the air conditioner running.

Exploring Misconceptions


People often believe that wearing lighter clothing in air-conditioned rooms will lead to a more restful sleep. However, studies suggest that the balance between deep body temperature and skin temperature is crucial for quality sleep. Cooling down the body effectively—while avoiding excessive cold—is key to a good night's sleep. Many participants acknowledged that segmenting body temperature control methods was essential for better sleep quality.

Insights from Sleep Experts


To address these growing concerns, sleep environment planner Mariko Kobayashi emphasized the importance of monitoring bedroom temperature and humidity, rather than solely relying on air conditioning. In her view:
  • - Ideal Conditions: Maintaining a room temperature of 26°C with a humidity level of 50% is optimal. Participants are encouraged to use tools to visualize these conditions.
  • - Sleepwear Choices: Opting for sleeveless summer attire is common, but according to experts, wearing lightweight long sleeves could absorb sweat better and prevent overheating.
  • - Air Conditioning Tips: Keeping direct cold air from blowing on the body and using timers wisely can help mitigate the negative effects noted by many participants.

Tackling the Summer Heat Challenge


Mariko Kobayashi's recommendations suggest that achieving great sleep requires a strategic approach:
  • - Harness the Power of Nature: Utilize gradual cooling methods, such as turning on the air conditioning before bedtime and ensuring consistent airflow in your bedroom.
  • - Stay Hydrated: Drink warm water instead of cold to maintain core body temperature and avoid waking up during the night.

Conclusion


There’s a growing need for individuals to understand that while air conditioning can offer relief, it also poses challenges that could hinder sleep quality. The balance between cooling and maintaining a healthy body temperature is crucial. As mariness prepares to develop products aimed at improving sleep quality in collaboration with experts, they hope to assist individuals in addressing these challenges effectively. This summer, it's all about protecting rather than just cooling the body, ensuring better sleep and health throughout the heat.

It is clear that as summers continue to evolve in their intensity, so too must our strategies for achieving quality sleep. Adjustments in lifestyle, sleeping conditions, and personal awareness can go a long way in ensuring restful nights amid Japan’s increasingly hot summers.


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Topics Health)

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