Why do we sleep?

Why do we sleep?





  Sleep is important for all animals. In fact, humans spend almost 25 years of their life sleeping. Many also wonder why do we sleep? Here's a post to pacify their curiosity.

Why do we sleep?

  When we see light, our brain releases cortisol, and keeps us awake. At night, due to absence of natural light, our brain doesn't release cortisol. Instead, it releases more amounts of melatonin. This makes us feel sleepy. 

  Due to various activities performed by our brain throughout the day, our brain secretes adenosine. Due to accumulation of adenosine, we fell sleepy. When we sleep, our brain reabsorbs the accumulated adenosine and gets ready for a new day.

  Besides this, during sleep, our brain performs various tasks like organising information, deleting unwanted data, etc. Our body also conserves energy while we sleep. 

  Because of all above mentioned reasons, we sleep.

  If you curious to know about what will happen if we stopped sleeping, click here.
Old Post

Sharing is caring!

Post a Comment

To track replies to your comment, click the 'Notify Me' checkbox

Previous Post Next Post

Contact Form