Each morning you wake up with one desire in mind -- to go back to sleep. You've ruled out a sleeping disorder but there must be something to change to stop feeling this way. Rest assured, Japanese researchers believe they have found a simple and natural solution to help you start the day off right. Their trick is all about getting natural light... at the right time. A small gesture that could transform your morning wakeup.
For many, the start of the day is nothing short of an ordeal. It's hard to leave the comfort of your bed without using the snooze button on your alarm several times. A common reflex with a scientific explanation: “sleep inertia,” a real phenomenon that can leave you feeling foggy-minded for almost two hours, even after a full night's sleep. To remedy this, many people turn to a cup of coffee, hoping to chase away the morning drowsiness.
But researchers at Osaka Metropolitan University propose a gentler, more natural and, above all, more effective approach: letting daylight into your bedroom a few minutes before you wake up. In a study published in the journal Building and Environment and spotted by StudyFinds, they demonstrate the benefits of this habit through an experiment conducted with about 20 young adults, with an average age of 25.8 years, who tend to go to bed late.
Participants were exposed to three different conditions in an east-facing room equipped with motorized curtains: 20 minutes of natural light before waking up, continuous exposure to light from dawn, or total darkness until it was time to get up. The researchers evaluated the effects of these scenarios using electroencephalograms, vigilance tests, heart rate measurements, and questionnaires on sleepiness and fatigue. The study took place in January and February to ensure stable light levels, minimizing weather disruptions.
"Let the sunshine in"
It turns out that participants exposed to natural light 20 minutes before waking were more alert and emerged more quickly from their morning drowsiness. This method promotes a smoother awakening, significantly reducing sleep inertia. By facilitating the transition between deep sleep and wakefulness, the morning light seemed to act as a natural signal, preparing the body to wake up in better conditions.
However, it has to be perfectly timed; light that comes on too early can have the opposite effect. When the curtains opened at dawn, people felt like they had been awakened during the night, which disrupted their sleep. The key, therefore, lies in precisely timed exposure to light.
In our overlit LED-brightened environments, access to natural light is becoming nothing short of a real luxury. And yet it is light that regulates our biological clock. The authors of the study advocate for better integration of daylight in housing design. And why not imagine smart houses where the curtains or blinds open automatically for a gentle awakening? Some people already opt for artificial dawn simulators but, according to researchers, nothing beats real sunlight. Our body is naturally attuned to it, much more than to artificial light, however sophisticated it may be.
So, before rushing for your morning coffee, remember to open your curtains first. This simple gesture could well become your best hack for feeling less foggy and more energized -- naturally -- in the morning.
Reference Provided by ETX
※ Picks respects the rights of all copyright holders. If you do wish to make material edits, you will need to run them by the copyright holder for approval.
more from
ETX
ETX
There's a generation of employees who have never known the world of regular office hours
2025-04-22 00:00:00
ETX
Europe's most feline-dense country is...
2025-04-22 00:00:00
ETX
Birds' songs are the reflection of their personality
2025-04-21 00:00:00
ETX
AI agents poised to take over travel industry
2025-04-21 00:00:00
BEST STORIES
The Conversation
'Peru's ancient irrigation systems succeeded in turning deserts into farms because of the culture - without it, the systems failed'
2025-04-16 00:00:00
KoreaJoongAngDaily
Of love, peace and BTS: Coldplay 'sings magic for every heart' in Korea
2025-04-20 00:00:00
AllblancTV
Do this every day for fullbody workout (Part 1/2)
2025-04-17 00:00:00
Inven Global
Hanwha Life Esports Emerges as Championship Favorite at LCK Media Day
2025-04-16 00:00:00
Health
ETX
Is generosity a question of heart or the amygdala?
2025-04-20 00:00:00
ETX
How your figure could bear a lasting imprint of the weather from decades ago
2025-04-12 00:00:00
ETX
The scientist rewriting DNA, and the future of medicine
Morning light acts as a natural signal, preparing the body to wake up in better conditions. Photography blackCAT / Getty Images© 
