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How Our Brains Wake Us Up
- One of the systems in the brain that wakes us up is the reticular activating system (RAS) - a part of your brain located just above your spinal column that acts like a gatekeeper or filter for your brain, making sure it doesnât have to deal with more information than it can handle.
- The RAS can sense important information and create neurochemicals that wake up other parts of the brain. It also keeps you awake throughout the day.
- Once the RAS switch turns on, it can take some time for your whole brain and body to wake up. This is because it takes a few minutes to clear all the âsleepyâ neurochemicals from your brain, which is why you may feel groggy when an alarm clock wakes you up.
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- Scientists study activity in the brain with a tool called electroencephalography ( EEG), that measures electrical signals coming from neurons.
- The brain is not turned off while you sleep - there is a lot of activity going on, even if youâre not aware of it. You cycle through four d...
When your brain is asleep, it shifts between deep and light stages. If your alarm clock goes off during a deeper stage of sleep, it takes longer for all the parts of your brain to wake up.
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Sleep needs vary from person to person. Age, genetics, lifestyle, and environment all play a role.
According to the National Sleep Foundation, adults need 7-9 hours of sleep a night. People who sleep seven hours a night are healthier and live longer. While the guideline is...
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- Itâs not unusual to wake up feeling a bit groggy. For many people, itâs nothing a cup of coffee or shower canât fix.
- Chances are, your morning grogginess is just sleep inertia, which is a normal part of the waking process. Your brain typically doesnât instantly wake up after sleeping...
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Our molecular clock inside our cells aims to keep us in sync with the sun.Â
When we disregard this circadian rhythm, we are at a greater risk for illnesses such as diabetes, heart disease, and dementia.
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