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Search Results for: sleep

April 16, 2021 By Srini Leave a Comment

Sleep Series: The Relentless Rivalry of REM and NREM

REN and NREMWhen we sleep, we go through a few stages. Prominent among them are REM and NREM. It is observed that for some non-specific reason, there is significant movement of the eyeball in all directions rapidly during REM sleep BUT does NOT send any visual signals to the brain. Hence, the name Rapid Eye Movement ( REM) sleep and the opposite – Non REM sleep. Some also say that they are “deep sleep” vs “shallow sleep” which I am not a great fan of. I believe they are simply various stages of sleep.

 

Sleep Series

Courtesy: sleepadvisor.org and Mathew Walker.

IF we draw a graph of brain neural activity, the graph will look something like this

As you can see, at the start it is the NREM which is occupying the real estate and the REM shows up intermittently. Approximately each of the cycles lasts for 90 minutes and then it changes. But in general, we can see the domination of NREM in the first half and REM in the second half. 

Interesting Facts on REM and NREM 

  • Dream your way to creativity: As homo sapiens came down from trees to sleep on flat grounds, they developed REM sleep as an evolutionary advancement. REM sleep is responsible for the evolution of creativity, memory and problem solving. It is during REM sleep, the neural network gets more intricately wired with new synapses being formed. In some sense, it is the REM sleep that contributed to the supremacy of humans over other animals.
  • Early morning school timing inhibits creativity: If schools, colleges or universities start pretty early in the morning, it is quite possible that the student has to wake up early and hence, foregoes some part of REM sleep. That is NOT good news for memory and creativity, which are most critical for studies.
  • Sleep algorithm is an enigma: NREM has been measured in 4 stages depending upon how deep it goes. The deeper it goes, the body gets better rest and the housekeeping activity of scavenging the brain of useless memory and storing of useful memory in the long term storage area happens – this is a totally involuntary activity based on an enigma algorithm. God/Nature is the first and best coder. 
  • Forgetting is beautiful: The brain decides to delete (forget) what is irrelevant. You will definitely not remember what breakfast you had the same day last week. Forgetting is an essential function just as much as remembering is. 
  • Striping emotion – REM heals: REM sleep is responsible for stripping emotion from past events over time. For example, you would remember the death of a close relative. But rarely you can recollect the emotions that were recorded when it happened. It is a blessing in a way. It is not the Time, but it is REM that heals! 
  • 7 hours or nothing: 5 cycles of 90 minutes – 450 minutes approx. 7 hours gives you a good full cycle. Anything less is like jumping 90% of the well! Short sleep leaves work undone and there is no use. You add to the pressure of work.
  • There can be no sleep “Deposit” and Sleep “Loans” ( this would appeal to the Finance community). You cannot oversleep to compensate for a past deficit nor you can accumulate a deficit to be cured by oversleep a bit later. It is 7.5 to 8 hours  a day, every day! You would now have understood why from the chart above.
  • You cannot “Live your dream”: The motor activity other than breathing is all frozen during REM stage , all muscles (particularly limbs) are frozen – imagine you swishing your sword or trying to run away when chased by a cobra! It protects you from getting injured!
  • You are not meant to remember your dreams: You will only remember that you had vivid dreams or nightmares. Dreams have been the subject of so much research. Only one thing is clear – every dream is made of illogical and impossible combinations. If you behave during the day like the way you behaved in your dream, you will find yourself in a psychiatric ward. It is the façade or alibi as the brain is reorganizing the hard disk.
  • Dreams have no meaning: Do not over analyze, dreams have no hidden meaning. If you need to know something, why would it be revealed in your dream? It would rather appear in Times Square visible to all.
  • NREM is all about detox and growth: NREM sleep detoxifies the body, grows tissues, improves immunity, repairs injuries. Breathing slows down, body temperature goes down, blood pressure drops and the body gets a deep relaxation to get ready for the next day. 
  • You need both: It is NOT that NREM is better and preferred than REM. Combined activity and result from both is critical for overall physical and mental health.

We hope you enjoyed reading this article on REM and NREM sleep. Stay tuned for more from the Sleep Series by Srini! To read more about sleep and sleeping techniques, check out Healthy Reads or tune in to LIVE sessions by experts on GOQii Play. 

#BeTheForce 

April 8, 2021 By Srini Leave a Comment

Sleep Series: The Chemistry of Sleep

sleep series: chemistry of sleepDifficult to believe? Yes it is true. The perfect sleep is the result of a complex reaction from 2 main chemicals. Adenosine is a neurochemical which accumulates during “wake” and drains during “sleep”. Imagine a specially made hourglass, but one which builds up for approx. 16 hours of our wake cycle and drains within 8 hours of our sleep cycle. The receptors of Adenosine inform the brain that “stock levels are up” and it is time to relax and sleep. As sleep kicks in, stock levels of Adenosine goes down and receptors send a “wake up” signal to the brain.

Adenosine is the primary inducer of sleep-wake cycle. It reduces neural activity and sets you to start sleep. Interestingly, Caffeine blocks the Adenosine receptors and creates the opposite effect.  There we go – as to why we feel a bit fresh and brisk after a cup of coffee – it is an illusion we create by confusing the brain! The body’s excretion system works hard to flush Caffeine. It takes 5-6 hours to flush out just 50% of this possessive chemical.

I’ve mentioned Adenosine over Melatonin as the primary sleep chemical because I wanted to impress upon the impact of Caffeine. We take Caffeine in many forms – Coffee, Cola, energy drinks, etc. Caffeine also impacts the Dopamine and Serotonin chemical reaction, thereby causing a significant disruption of the normal neural activity. 

Do let Adenosine do its job naturally, you will sleep on time and naturally! Caffeine interferes with several hormonal/neurochemical reactions related to sleep. Do not consume Caffeine beyond lunchtime and in any case, beyond 4pm. 

The Magical Darkness Hormone – Melatonin

Melatonin is the second chemical responsible for enabling “onset” of sleep. It detoxifies the body of free radicals and other toxins. It starts secretion as soon as darkness sets in and it peaks by midnight. The synthesis of melatonin occurs through a multistep complex chemical process:

  • It all starts with food – food contains an amino acid called tryptophan. Foods like Milk, oats, nuts contain more tryptophan. 
  • Tryptophan is absorbed from the bloodstream to the pineal gland in the brain.
  • First, tryptophan is converted to another amino acid and then to a brain chemical called Serotonin. 2 Enzymes are involved here!
  • Serotonin’s conversion to melatonin involves two more enzymes.
  • All chemicals discussed here follow complex routines and they are part of a chain which is amazingly responsible for the onset of sleep. On top of it all, there is a closely coordinated play of the “Brain-Gut complex” to get this right!

How Can You Aid This Natural Process For Good Sleep? 

DON’T intervene in the natural process! Supplements can’t get you anywhere near the good quality sleep offered by this natural process.  

  • Beware of Caffeine! – Stop post lunch consumption
  • Consume foods high in tryptophan – consult your GOQii coach
  • Gut (Serotonin storage) has its role in sleep, so keep it clean and healthy
  • Get used to darkness after dinner to catalyze natural Melatonin 

Adenosine has other functions such as certain cardiac functions as well. This article does not deal with them. An enzyme is a biological catalyst that speeds up the rate of a chemical reaction and an amino acid is an organic acid used to make proteins usually obtained from food. OTC Melatonin – a small dose is usually fine to get over jet lag. 

We hope this article on the Chemistry of Sleep helps you!  Stay tuned for more from the Sleep Series by Srini! To read more about sleep and sleeping techniques, check out Healthy Reads or tune in to LIVE sessions by experts on GOQii Play. 

#BeTheForce 

March 17, 2021 By Srini 2 Comments

Sleep Series: In Praise Of Darkness!

sleep series

In the beginning there was only darkness and then, light came out of darkness! Light and darkness are not two different and opposing things. Society has made a villain out of darkness. Darkness is used as a synonym of all things sinister. We are trained from childhood to look at darkness with fear.

In Hindu religion, darkness is deified – we have “Maha Kaal” and “Maha Kaali” – in religion this could either mean “darkness” or “time” – there is close relationship between them, but that is for another day. 

There is darkness everywhere – interstellar, intergalactic is just darkness.

Modern living has opted for lights of high luminescence. The poor old incandescent light of 60 watt (tungsten filament bulb) has a luminosity of 400-800 lumens whereas the modern day LED lamps can produce the same lumens at just 5 Watts. Where we had one incandescent light, now we have at least 4 LED! Which means we are consuming 5 times more light! 

Light has to be light ( Pun intended)

Since we fear darkness, we have created a social necessity (business necessity?) for bright light, whereas the number 1 villain for good sleep is LIGHT! Many of us know of the bad impact of blue light emitted from phones, laptops and tablets. Evenings are intended to be a journey to acclimatize to emerging darkness and night time is intended to be pitch-dark by nature.

So, for a good night’s sleep, the gradual reducing of lighting and luminosity is a must. Which means after 7:30pm, you should: 

  • Slowly switch off lights and send a signal of reducing light to the eyes
  • Make the bedroom pitch-dark for sleeping
  • Immediately activate “night mode” in Laptops and Phones

This could easily be the first step towards good sleep! Remember that you are meant to sleep in darkness. The sleep hormone Melatonin (more about this later) is highly impacted by luminosity. Darkness is key to sleep. Light is an inhibitor of sleep. Embrace the darkness, start falling in love with it! Darkness is the source of all light, time and space and is a good first step to a good sleep.

We hope you enjoyed reading this article so far. Stay tuned for more from the Sleep Series! To read more about sleep and sleeping techniques, check out Healthy Reads or tune in to LIVE sessions by experts on GOQii Play. 

#BeTheForce  

June 28, 2018 By Samar Hafeez 7 Comments

Reduce Anxiety, Sleep Sound

anxiety1

Anxiety and Fear are a part of life. You may feel anxious before you take a test or walk a dark street. This kind of anxiety is useful as it can make you more alert, careful and productive, however, it usually ends soon after you are out of the situation that caused it. But, for millions of people, the anxiety does not go away and gets worse over time. This can make one, more restless, clumsy and unproductive thereby causing dysfunction in daily activities, and ultimately begins to take over lives.

Anxiety has plagued millions around the world from time immemorial. Anxiety is defined as a feeling of excessive worry, nervousness or unease about something. In this people are always preoccupied with ‘what- if’ thinking, what if something bad, dangerous or threatening could happen, what if anything bad happens to someone I love etc.

Symptoms of Anxiety:

Physical symptoms include:

  • Muscle tension, Muscle Twitching
  • Chronic indigestion, constipation, Diarrhoea
  • Increased or heavy breathing
  • Hyperventilation/Palpitations
  • Nausea
  • Cold chills, Hot flash, Frequent urination, sudden weight loss, headaches

Emotional symptoms include:

  • Feeling of dread, feeling tense and jumpy
  • Irritability
  • Restlessness
  • Sleep problems
  • Panicky most of the time

Cognitive symptoms:

  • Poor concentration Negative thoughts and Apprehension
  • Confusion
  • Poor communication, attention and memory skills

Now let’s move on to discuss how Anxiety may cause sleep problems

Many of us toss and turn and watch the clock when we can’t sleep for a night or two. But for some, a restless night is routine.

The growing cases of sleep disorders due to anxiety are not to be ignored. Indian women outnumber men when it comes to disturbed sleep due to anxiety.

Anxiety and sleep have a bidirectional relationship, meaning high amounts of anxiety tends to disrupt sleep and disruptions in sleep tend to increase anxiety.

In case of Anxiety, it begins in anticipation of an event. When you reflect on a stressful event at night, the emotional centres of brain namely Amygdala and Insular cortex get activated. This stimulates a chain of events that raise both your adrenaline and blood sugar levels. This sudden source of energy then keeps you alert, tense and restless. Ultimately disrupting your sleep.

Sleep on other hand is an integral part of emotional regulation. A lack of it leaves your emotions unstable and in disarray. You are more prone to falling sick often, show irritability and lack of patience and discontent often.

What your Anxiety at night may look like

An individual usually experiences either racing or stagnant/fixed anxious thoughts. These thoughts build on each other or spiral around making it harder and harder to fall asleep.

Some people describe this feeling as being stuck in their head.

Due to the consistent rise in adrenaline and cortisol (stress hormone) levels more and more physical symptoms may result.

Reduce Anxiety

  1. Melt Anxiety with mindfulness meditation: Focusing on your breath and physical sensations can help you stay in the present moment. This can help you recognize what your thoughts may be, allowing them to pass without reaction or judgement.
  2. Rationalize and not Awfulize: Accept the what if thinking as a projection that connects horrifying thoughts and images to anxiety. Think that a what if disaster does not validate or guarantee a disaster, Awfulizing things real or imagined situations as horrible, Awful or terrible will only make symptoms worse
  3. The shift from passive to active perspective: Talk to yourself in a realistic self- assuring way
  4. Relax your body Relax your mind: Practice Diaphragmatic breathing these exercises are simple to learn and can have relatively quick effects. This technique involves breathing in a way that your belly expands as you breathe in and contracts as you breathe out. Psychologist Jon Carlson describes belly breathing as a technique that can send calming signals to the brain and promote a feeling of relaxation and improved attention and awareness.
  5. Imagination and Relaxation: Rolodex of anxiety thoughts can be controlled by using Guided imagery, Guided imagery serves to redirect people’s attention away from what is stressing them and towards an alternative focus, this includes only visualizing pleasant and relaxing image like on a beach or on a serene hill or whatever may soothe a person. This practice is extremely portable, as it relies on nothing but one’s imagination and concentration abilities.
  6. Exercise: Regular exercise provides an outlet for frustrations and releases mood-enhancing endorphins/hormones
  7. Play music: Soft calming music can lower blood pressure and muscle agitation, usually found symptoms in people who get anxious often
  8. Direct anxiety elsewhere: Lend a hand to relative or neighbour or volunteer in your community services. Helping others will take your mind off your own anxieties and will help you count your blessings.

Sleep More Soundly

  1. Make good sleep a priority: Block out 7 hours for a full uninterrupted sleep
  2. Maintain regularity: Try to sleep and wake up on same time daily even on weekends, this helps circadian rhythm your ‘biological clock’ to tick properly.
  3. Avoid stimulants: Say no-no to alcohol, coffee, chocolate or nicotine post sunset
  4. Keep it cool: sleep in a dark room which is slightly cold, this helps the temperature in the brain to fall and help fall asleep quicker, the cool room takes your brain and body in the right temperature direction to get good sleep.
  5. Dark- deprived society: We need darkness in the evening to allow the release of a hormone called Melatonin(sleep hormone) It helps the healthy time of our sleep. In this modern era, we are severely deprived of darkness. So try to dim lights down in your home an hour before bed. Stay away from LED screens as they emit blue light that actually puts break on melatonin and fools brain into thinking it’s still daytime, even though night time.
  6. Do not stay in bed awake: If you haven’t fallen asleep within 30 mins of getting into bed or have woken up and finding difficult to fall back asleep, the advise is to get up go to another room and in dim light just read a book, no screens, no email checking, NO FOOD. And only when you feel sleepy should you return to bed and that way your brain can actually re-learn the association between bed being a place of sleep, rather than a place to stay awake.
  7. Avoid big meals before bedtime and avoid working out 2 hours before bedtime.
  8. Try magnesium-rich foods/supplements like fish or fish oil, almonds, bananas, pumpkin seeds, warm milk, cherries, mushrooms and dark green leafy veggies in dinner. Magnesium relaxes muscles and easesanxiety1 anxiety which contributes to insomnia
  9. Chamomile magic: Try having a cup of chamomile tea 30 mints before bed chamomile is regarded as a mild tranquillizer and sleep inducer, It relaxes nerves and muscles and help fall sleep quicker.

The power of sleep has always been known to be significant but now there’s more and more evidence demonstrating just how important it is for those who experience anxiety. By using above mentioned techniques you can hope for relief from anxiety and eventually will sleep your anxiety away!

 

 

 

 

 

 

 

 

 

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