Using Your Phone as an Alarm Clock Could Make Your Brain Lazy, Experts Warn

Waking up to a smartphone alarm may be the starting point for a decline in daily work quality, according to Japanese neuroscientist Dr. Ryuta Kawashima. The professor at Tohoku University's Institute of Development, Aging and Cancer warns that this habit can reduce activity in the prefrontal cortex, the brain region crucial for thinking, creativity, and judgment.

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Using a smartphone as an alarm clock is the starting point for a decline in work quality throughout the day, not only reducing prefrontal cortex activity but also harming thinking and creativity.

Dr. Kawashima's research indicates that the first hour after waking is a critical transition period for the prefrontal cortex to become active. When individuals immediately reach for their phones upon waking, they flood their brains with notifications and messages, disrupting this delicate process. This constant passive reception of information, rather than active thinking, leads to a "strange imbalance" that diminishes cognitive functions.

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The first thing you do when you wake up is touch your phone, then check notifications, messages, and social media. If the first thing you do upon waking and the last thing you do before sleep involve your phone, it may quietly damage the function of the prefrontal cortex.

While it might seem like using a phone engages the brain, Dr. Kawashima's findings suggest the opposite: the prefrontal cortex becomes less active. Despite the eyes seeing, ears hearing, and fingers moving, the brain's core thinking centers are essentially slacking off. This phenomenon is identified as a root cause of declining cognitive abilities associated with smartphone use.

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Although the eyes are seeing, the ears are hearing, and the fingers are moving, the brain's most important part is actually being lazy.

To counteract these effects, experts advise managing smartphone usage strategically. Key recommendations include avoiding phone screens for 30 minutes after waking and using a traditional alarm clock instead. During periods requiring deep thought, the prefrontal cortex should be reserved for focused work. Furthermore, a 60-minute digital detox before bedtime is suggested to allow the brain to enter a restorative state. These practices aim to help the prefrontal cortex regain its optimal function.

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The problem during these three periods is not the blue light affecting sleep, but that the phone keeps the prefrontal cortex in a passive reception mode, not an 'active thinking and generating' mode, causing creativity and judgment to slowly erode in this difference.