Sleep

Sleep

Any process in which an organism enters and maintains a periodic, readily reversible state of reduced awareness and metabolic activity. usually accompanied by physical relaxation, the onset of sleep in humans and other mammals is marked by a change i

"Sleep is the greatest legal performance enhancing drug that most people are probably neglecting."

Humans beings are the only species that deprive themselves of sleep for no apparent gain. Mother nature has never faced the challenge of coming up with a safety net for lack of sleep.

Types of Sleep

All stages of sleep are important - "mother nature wouldn't waste time putting you into a state that wasn't necessary.

Non-REM Sleep (Stages 1-2)

REM Sleep (Stages 3-4):

Our cardiovascular system goes through periods of dramatic acceleration and then dramatic deceleration. Our brain paralyzes our body so our mind can dream safely, so we don't dream that we can fly and then attempt to do this.

Our brain replays memory sequences we learn while awake, but approximately twenty times faster than when you're awake.

  • Motor skills: Sleep doesn’t improve the places where we’re already good in terms of motor skills, sleep is intelligent – it finds friction points or motor skill deficits, and smooths them out/improves them.

Sleep and Drugs

Canabis is very good at blocking REM cycles . Marijuana certainly puts people to sleep quicker, but it's debatable whether it's naturalistic sleep.

Alcohol is also very good at blocking REM cycles. When an alcohol stops drinking alcohol, they'll often develop delirium tremens. The alcohol has been blocking REM sleep for so long, and the pressure for deep sleep has built up so much, it spilled over into wakefulness.

Dreams

When we dream, we essentially become psychotic – we see things that aren’t there (hallucination), we believe things that couldn’t possibly be true (delusion), we have wildly fluctuating emotions, and we become confused about time/place .

In REM sleep, some parts of the brain become 30% more active compared to when awake .

  • Parts of the brain regulating emotion ramp up, same with visual and motor parts of the brain .
  • However, the prefrontal cortex (associated with rational thinking) gets shut off .

Why do we forget dreams?

  • One theory of dreaming, is that it’s a reconstruction of fragments, and our cortex packages everything together and makes a good story – Matthew doesn’t really agree with this
  • Not remembering dreams doesn’t necessarily mean forgetting your dreams . Often times, random things trigger the unlocking of a dream memory. The memory of the dream is available, but when we wake up, we lose the “IP address” of that memory – it’s available, just not accessible

In the brain, during REM sleep, the chemistry of the brain is very different . This specific balance of noradrenaline and acetylcholine change the input/output of information flow into the memory center of the brain

It’s more about output (generating dreams), than input (the saving of memories/dreams) .

  • Noradrenaline (a stress chemical), the sister chemical of adrenaline, plummets to very low levels
  • When you wake up, that’s when you have the spike of noradrenaline
  • Another chemical, acetylcholine, goes up in REM sleep

This is very similar to a DMT trip – shortly afterwards it feels like a dream

Why do we dream? Why did it evolve evolutionary?

Perhaps it’s just a byproduct of REM sleep - Dr. Matthew Walker doesn’t agree with this because it’s metabolically demanding to have dreams in addition to REM sleep, and whenever mother nature burn calories it’s usually for a reason

The horrible effects caused by lack of sleep

Lack of sleep and physical performance

If you're getting 6 hours or less of sleep, your time to physical exhaustion drops by up to 30%.

  • Lactic acid buildup
  • Lungs ability to expire CO2 and inhale Oxygen
  • Lower peak muscular strength and speed
  • Higher risk of injury

We need 7-9 hours each night. Impairments in the brain below 7 hours each night are measurable.

Timeline

People

Name
Role
LinkedIn

Dr. Steven Gaulin

Researcher, Author, Professor

Further reading

Title
Author
Link
Type
Date

Why We Sleep: Unlocking the Power of Sleep and Dreams

Matthew Walker, PhD

Book

Documentaries, videos and podcasts

Title
Date
Link

Joe Rogan Experience #1109 - Matthew Walker

4/25/2018

Companies

Company
CEO
Location
Products/Services

News

Title
Author
Date
Publisher
Description
Brian Barrett
May 17, 2020
Wired
It's not easy to relax in the middle of the Covid-19 pandemic. But there are some simple tips and techniques that can help you get some shut-eye.
Darrell Etherington
April 3, 2020
TechCrunch
The FDA has been working to adapt its policies and restrictions to respond to the growing need for unconventional solutions like shortages of medical equipment needed for treating COVID-19 patients. A group of doctors, engineers and medical researchers from UC Berkeley, UCSF and working hospitals has devised a creative solution to the ventilator shortage they're [...]
Amie M. Gordon
March 31, 2020
Harvard Business Review
When you think you don't have time for it is when you need it the most.
Shannon Bond
February 18, 2020
NPR.org
A boom in technology promising to improve sleep has an ironic side effect: orthosomnia. Thanks to sleep trackers, people get so obsessed with perfect sleep that they are losing sleep over it.
Adrienne So
January 29, 2020
Wired
Having a kid doesn't extinguish inspiration. Three cartoonists share how becoming parents radically transformed their art--and everything else.
By Ben Spencer Medical Correspondent For The Daily Mail
December 27, 2019
Mail Online
A study by scientists at Rochester University in New York have found that parents should set strict bedtimes for teenagers - right up until the age of 18.
Sara Harrison
December 1, 2019
Wired
Worrying about sleep is perhaps the most counterproductive thing you can do, no matter how many gadgets try to tell you otherwise.
November 21, 2019
News18
The study found that around 12 weeks of yoga helped improve sleeping conditions for around a year.
Kaitlyn Wylde
October 2, 2019
www.nytimes.com
An emergent A.S.M.R. category on YouTube involves young men role-playing romantic partners, all in service of a better night's rest.
CBDOilUsers.com
September 17, 2019
www.prnewswire.com:443
FLOWER MOUND, Texas, Sept. 17, 2019 /PRNewswire/ -- CBDOilUsers.com, a leading CBD oil education website for consumers, has released its list of the "Best CBD...
Editorial Team
September 16, 2019
TheHealthSite
Sleep is the only time when the body rests. Take that away and your body will become weak and prone to adverse health conditions. Read on to know more about sleep deprivation.
April 29, 2019
WebWire
Work stress and impaired sleep are linked to a threefold higher risk of cardiovascular death in employees with hypertension. That's the finding of research published in the European Journal of Preventive Cardiology, a journal of the European Society of Cardiology (ESC).1 Study author Professor Karl-Heinz Ladwig, of the German Research Centre for Environmental Health and the Medical Faculty, Technical University of Munich, said: "Sleep should be a time for recreation, unwinding, and res...

References

Golden logo
Text is available under the Creative Commons Attribution-ShareAlike 4.0; additional terms apply. By using this site, you agree to our Terms & Conditions.