It’s normal to wake up a few minutes before your alarm goes off

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Checking your phone or bedside clock early in the morning with one eye closed minutes before the alarm goes off is a strange habit. But it happens to many of us.

Our body can somehow sense the weather and wake-up time even when we are sleeping. Although very strange, this habit defeats the very purpose of an alarm by giving you a glimpse of your remaining sleep time.

But have you ever wondered why our sleep is disturbed a few minutes before waking up?

Don’t worry, because there’s a scientific reason why you wake up early.

According to sleep experts, our body is controlled by nerves known as the suprachiasmatic nucleus or nuclei (SCN), a tiny region of the brain in the hypothalamus. It is responsible for controlling circadian rhythms.

You may never have heard of SCN before, but they play a vital role in your system. The suprachiasmatic nucleus controls blood pressure and body temperature and also keeps tabs on our sense of time.

The suprachiasmatic nucleus takes a call when you feel sleepy and wide awake during the day. So if you suddenly feel drowsy after a heavy lunch, you know the nerve responsible for your droopy eyes.

With SCN can trigger our sleep and wake, the sleep-wake cycle is regulated by a protein called PER. The cycle becomes more efficient and consistent when we follow a routine of going to bed at the same time every night and also waking up at the same time the next morning.

The PER protein level rises and falls throughout the day. Low levels of PER can lead to low blood pressure that makes us sleepy at night. Likewise, higher pressure makes us feel wide awake.

So what is the best sleep cycle and ideal sleep duration for adults?

Experts advise people over 18 to get 7-8 hours of sleep per night. Scientists say that if you stick to a good sleep schedule, eventually your body will learn to adapt and increase your PER levels just before your alarm goes off.

In other words, the habit of waking up before waking up mostly happens to those who have a regular sleep schedule.

Experts also noted that waking up usually occurs an hour before the alarm goes off.

About Mildred B.

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