why do we sleep

Why Do We Sleep?

It has been believed that human beings sleep to recharge ourselves and replenish our body for the next day’s activities. Sleep helps both the body and the brain to recover. The human body requires rest to function correctly, and all humans sleep for around 2/3rds of their lifetime. Meanwhile, sleep deprivation has a lot of adverse effects to it as it will affect the human body’s activities.

However, scientists are not sure why the human body requires spending 2/3rd of its life sleeping. Sleep researcher William Dement said that the best explanation for the activity of sleeping would be that “as far as I know, the only reason we need to sleep that is, really solid is that we get sleepy.”

So why do we sleep?

Recent studies have been able to prove that during the day parts of the brain builds connections with some brain cells. Following this, at night when we sleep the critical connections are made stronger while the redundant links are severed and forgotten.

Another study conducted by Maiken Nedergaard, a professor at the University of Rochester Medical Centre in New York said that sleep helps to clear the brain of unwanted chemicals. When we sleep, and the brain shuts off for some time, this is the optimal time for the brain to clear away the chemicals.

What happens if we don’t sleep?

Researchers at Surrey University in Guildford have found that when the body does not get enough sleep, it will lead to changes in the way the gene cells work. The activity of gene cells are altered and cells which are involved in inflammation.

The explanation behind this is that in earlier times when the body doesn’t get enough sleep the gene cells prepare themselves for injury from any attack that might happen. However, in modern times there is no attack that happens, and hence this inflammation just increases the chance of heart disease or stroke.

So from now, let’s work on the principle of “early to bed, early to sleep, makes a man healthy, wealthy and wise”.

Also Read: Foods To Help You Get That Perfect Sleep

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