Sleeping (Biology)

Excellent piece on the basics of sleep. More specifically, the “clock” in the brain is the visual zeitgeber of the sprachiasmatic nucleus.

See, also: http://en.wikipedia.org/wiki/Suprachiasmatic_nucleus

This light sensitive clock in the brain is probably the “real” basis of what some in metaphysics refer to as the “third eye” though some argue for the pineal gland.

http://www.rickrichards.com/chakras/Chakras1d.html

Scientific Babble

Today I am going to explore different aspects of sleep – from why do we dream to how do you know if you are asleep! Hope you enjoy this post.

What happens whilst you sleep?

Roughly you spend a third of your life sleeping. Whilst sleeping, four main things happen:

Heart rate drops
Muscles relax
Breathing slows
Start to respond less and less to the outside world
Sleep is used to restore your body’s energy and may help you commit to memory things that have happened during the day.

Why do we dream?

No one really knows why we dream. Various psychologists believe dreams are the key to our subconscious. Some researchers today agree that the purpose of dreaming is to keep us asleep as if they are the brain’s entertainer. Others believe they are used to delete unuseful information and to retain important information.

How do you know when to…

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