The Paradox of a "Daily Life for Sleep"—The "Essence of Sleep" That Mitochondria Teach Us

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Have you felt like this recently?

"I sleep, but I don't feel rested."
"Even though I'm sure I slept enough, the morning is tough."
"I look tired from the morning and can't get into the swing of things."—


In my previous notes, I have shared several habits for energizing your mitochondria.

Mitochondria are

entities that exist in large numbers within each of our cells, generating the "energy (ATP)" necessary for humans to carry out all life activities.Whether these mitochondria are healthy or not greatly influences our "health span" and "beauty span."

our "health span" and "beauty span."


In previous articles, I introduced "mitochondria habits you can start today," such as deep breathing, cold exposure, hydration, and exercise, but as I hinted in my last article,


The Blueprint for Regaining Youth—




40Beauty from your 40s is determined by "mitochondria"the foundation of beauty and health is "sleep."Because—sleep is the time when you can fully concentrate your energy (ATP) on recovery.In other words, maximizing the effects of sleep maximizes your performance the next day.To put it another way, the accumulation of that is what maximizes the performance of your life.

The "depth of sleep" is determined by how you spend your time while awake.
determined by how you spend your time while awake.In a sense, daily activities are a "preparation period" for when you fall asleep at night.


Recently, the term "end-of-life planning" has become common, where one prepares carefully for that time that will eventually come—
Similarly, by rethinking the main axis from "activity" to "sleep" and spending your day imagining such a paradox, you will surely be able to see the rhythm of your life from a bird's-eye view and see a more positive and fresh landscape.

In this article, I will organize the essence of "Sleep × Mitochondria" as clearly as possible.



"Sleep × Mitochondria"
• What are mitochondria doing during sleep?• Which is more important, the "quality" or "quantity" of sleep?

• How do you create good sleep?
Actually, all the habits I have shared so far were connected to "this"—




this time, we will collect those foreshadowed points together.

Now, let's begin.

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Chapter 1 | What are mitochondria doing during sleep?

Actually, mitochondria are working actively "without rest" even while we are asleep.
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① Mitochondria continue to create "energy (ATP)" even during sleep

Indeed, even while sleeping—

• The heart is beating
• Breathing continues
• Body temperature is maintained
• The brain is organizing information
• The skin is being rebuilt
• Muscles are being repaired

All of these require energy.

In other words, sleep is not "a time to stop making energy," but "a time to change how energy is used."
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② The "use" of energy (ATP) changes between when you are awake and when you are asleep

This is a very important point.

When you are awake, the energy that mitochondria create is mainly used for "external activities."
mainly used for "external activities."

• Walking
• Thinking
• Talking
• Working
• Doing housework

In other words, energy is used for "life in this very moment."
On the other hand—


When you are asleep, the energy that mitochondria create is used for "internal recovery."

"internal recovery."• Resynthesis of damaged proteins

• Repair of mitochondrial membranes and enzymes
• Refilling of neurotransmitters
• Normalization of intracellular ion balance
• Hormone synthesis (growth hormone, etc.)
All of these require energy.

In other words, sleep is "a time to recover while using energy."


"a time to recover while using energy."Mitochondria work without rest even while you sleep, "preparing" you for tomorrow.


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③ Sleep is conversely determined by "preparation while awake"

Here, there is another important fact.

The quality of recovery work performed during sleep is greatly influenced by the internal environment while awake (oxygen, blood flow, body temperature rhythm, autonomic nervous system state).
In other words, what you do while awake determines the quality of your sleep.


For example—

• If shallow breathing continues, it is difficult to enter a relaxed state, and sleep tends to be shallow.


• If you sleep while dehydrated, your blood becomes concentrated, making it harder for oxygen and nutrients to reach your cells.• If you don't have an exercise habit, you have less mitochondria, and recovery work during sleep cannot be performed sufficiently.• If you sleep while your body is cold, blood flow is poor, and nutrient supply to cells is delayed.

In other words—
The quality of recovery work performed during sleep is influenced by how you spend your time while awake.

influenced by how you spend your time while awake.



That is why how you spend your daily life is important.
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Chapter 2 | Which is more important, the "quality" or "quantity" of sleep?

"Quality is important for sleep"
"It's okay if it's short as long as you sleep deeply"

There are probably many people who have heard such words.
But in reality, which is more important, "quality" or "quantity"?

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① The answer is, both are important—

However, there is a priority.

Let me start with the conclusion.
From a medical and biological perspective, good sleep requires three conditions.
good sleep requires three conditions.

• Sufficient sleep time (quantity)
• Deep sleep (quality)
• Regular sleep (rhythm)

Only when these three are met can it be called "good sleep."
In other words—

Good sleep cannot be achieved with "quality alone" or "quantity alone."
However, there is an important priority.



there is an important priority.
That is—1. First, ensure "quantity"

2. Next, regulate the "rhythm"

3. Then, improve the "quality"
This is the order.
Why this order?

During sleep, in our bodies—


Brain waste is excreted,

Cells are repaired,
Skin turnover progresses,
And memories are organized.
For these "tasks," a certain amount of time is absolutely necessary.


a certain amount of time is absolutely necessary.
Even if you sleep deeply (quality), if you only sleep for 6 hours (quantity), the repair work will end halfway through.Therefore, ensuring "quantity" is the top priority.

And if you sleep at different times every day (rhythm), your internal clock will be disrupted, and you won't be able to get deep sleep itself.
In other words—


First quantity, then rhythm, and then quality.



This order is scientifically correct.
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② Why is "quantity" the top priority?

'I was fine pulling all-nighters when I was young'—
I think many people feel that way.

But in reality—
even when you were young, short sleep duration
accumulated damage to your brain and cells.

It’s just that, due to the resilience of youth,
you looked fine on the surface.

In fact, for teenagers,
longer sleep duration is necessary for growth, learning, and memory consolidation,
and the 'National Sleep Foundation and the Ministry of Health, Labour and Welfare'
recommend 8 to 10 hours of sleep.

(7 to 9 hours are recommended for those in their 20s to 70s,
and 7 to 8 hours for those in their 80s and older.)

In other words, at any age—
first, you need sufficient sleep duration (quantity).


For example—
if you only have 5 hours of sleep,
your body decides the following:

'There isn't enough time for repair.
I'll repair the parts necessary for life support first,
and put the 'nervous system' and 'beauty' on the back burner.'

As a result—
you feel tired from the morning,
you don't feel positive, and your skin condition doesn't improve.

This is a 'state of insufficient quantity.'


On the other hand, if you can secure 7 hours of sleep,
your body can proceed with recovery work with room to spare.

'There is enough time for repair.
I've maintained the heart, brain, and internal organs.
I can use the remainder for the 'nervous system' and 'beauty.'


In other words—
only when sufficient sleep duration is secured,
・skin repair progresses
・energy recovers, and positivity returns

Without quantity, no matter how deeply you sleep (quality),
your body cannot recover sufficiently.

That is why,
'securing quantity first' is the top priority.

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③ How to determine if you are sleeping enough

The scientifically recommended sleep duration
is generally 7 to 9 hours for adults.

However, because there are individual differences,
'Can you wake up easily without an alarm in the morning?'
is one guideline.

If every morning,
・you can't wake up even when the alarm goes off
・your body feels heavy even after waking up
・you feel sleepy during the day

if you are in this state,
there is a high possibility that your sleep duration is insufficient.


Conversely,
・you wake up naturally in the morning
・your body feels light when you wake up
・you feel almost no sleepiness during the day

if you are in this state,
it is a sign that you are securing
sufficient sleep duration for yourself.

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④ 'Quality' is, of course, also important

However,
'quantity is not all that matters'
—that is the point.

For example—
even if you sleep for 9 hours,
・you wake up many times in the middle of the night
・you don't feel refreshed even after waking up in the morning
・you feel strong sleepiness during the day

if you are in this state,
there is a high possibility that there is a problem with the 'quality' of your sleep.

Even if you have secured the quantity,
if the quality is poor, your body cannot recover sufficiently.

What is important is whether, when you wake up,
you feel a 'sense of restorative sleep.'


That is why, first—
secure a solid 7 hours of sleep.
(For teenagers, secure 8 hours)

On top of that,
work on adjusting your rhythm and improving quality.

This order is
the most solid foundation for sleep habits.

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Chapter 3 | Good sleep extends 'beauty span' and 'health span' at the same time

Now, if you can secure 'good sleep',
what exactly changes?

In this chapter,
I will reorganize the connection
with the previous articles.

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① Sleep is the ultimate habit to extend 'beauty span'

As I mentioned in the 8th article,
The blueprint for regaining youth—40Beauty from your 40s is determined by 'mitochondria'
to extend 'beauty span',


'surplus energy that can also be used for beauty'was necessary.
And the best way to create that surplus is

'good sleep.'
During sleep—


the energy (ATP) produced by mitochondria
is used for the synthesis of growth hormone.
This growth hormone

・activates fibroblasts that make collagen,
・promotes skin turnover, and
・repairs damage.
In other words, sleep is—


'the time when mitochondria rebuild the skin.'Conversely, if you are sleep-deprived,


energy (ATP) does not reach beauty,
growth hormone secretion also decreases,
and skin repair cannot keep up.
As a result,

・you lose firmness,
・dullness appears, and
・recovery slows down.
No matter how good a beauty serum you use,


if you don't have enough sleep,

mitochondria cannot repair the skin.The shortest route to extending 'beauty span' is

'adjusting your sleep'—
that is all there is to it.

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② Sleep is the foundation for regaining positivity

As I mentioned in the 7th article,
It's not your fault that you can't be positive—the 'true nature of the heart' taught by mitochondria
positivity


is greatly influenced by whether energy is reaching the brain.And the most effective way to restore brain energy
is, after all, 'good sleep.'

During sleep, in the brain,
neurotransmitters are replenished.
This is—


・serotonin (happiness)
・dopamine (motivation)

・noradrenaline (concentration)
the work of replenishing substances
that support your feelings.
If you don't have enough sleep,

these substances are insufficient,


and a state where you cannot be positive continues.

Conversely, if you get good sleep—the next morning, naturally,・your feelings become lighter,


・motivation wells up, and

・you can think positively.
Positivity is
not something you 'create,' but



something that appears naturally when energy is balanced.

The foundation for that is sleep.⸻

③ Sleep is the foundation for extending 'health span'

If sleep deprivation continues—
・metabolic syndrome
・diabetes
・high blood pressure
・decline in cognitive function

numerous studies have shown that health risks such as these increase.
Also, sleep deprivation and insomnia symptoms

are linked to reports of glucose metabolism disorders and increased risk of type 2 diabetes.

Conversely, if you can secure good sleep—


・blood sugar levels become easier to stabilize,・blood pressure is regulated,
・immunity is maintained, and
・cognitive function is maintained.
In other words—
sleep is the 'most basic foundation'

for extending 'health span.'
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Chapter 4 | 'Preparation while awake' to create good sleep

Finally, the main topic.

To create 'good sleep,'
what should we do?


The answer is actually simple—

all the 'habits' I have told you about so far
were 'preparations' to be done while awake.

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① Deep breathing stabilizes energy production during sleep

As I explained in the third article,
Why Breathing Changes Cells—Connecting to 'Demon Slayer'“the story of breathing and mitochondria”
deep breathing delivers oxygen to mitochondria throughout the body and stabilizes energy production.

And—
by taking deep breaths during the day,
you enter a relaxed state more easily, making it smoother to fall asleep at night.


Conversely—
if you continue to breathe shallowly,
it becomes harder to enter a relaxed state,
and your sleep is likely to be shallow.

In particular,

・Exhale deeply when you wake up in the morning
・Take deep breaths if you feel your breathing is shallow during the day



just by being conscious of these two things, you will find it easier to fall asleep.
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② Cold stimulation regulates blood flow and creates a body temperature rhythm

As I explained in the fourth article,
Why Cells Awaken with Cold Water—What Mitochondria Love“gentle cold stimulation” story
cold stimulation causes blood vessels to constrict and then dilate,


improving blood flow.By raising your body temperature with cold stimulation in the morning,
you create a clear rhythm in your body temperature,


making it easier for your core body temperature to drop naturally at night.

In other words, falling asleep becomes smoother.

And above all—by improving blood flow,


the supply of oxygen and nutrients to the mitochondria during sleep becomes smoother,

and recovery processes proceed efficiently.
In particular,


・Wash your face with cold water in the morning
・Rinse only your ankles with cold water after a bath
just by continuing these two things, your body temperature rhythm will be regulated,

and sleepiness will naturally come to you at night.
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③ Hydration maintains blood flow during sleep

As mentioned in the 5th article,
Are you drinking enough water? — The 'other lifeline' that keeps mitochondria working"another lifeline" story
, water is

the 'logistics route' that transports oxygen and nutrients.
And—if you hydrate during the day, blood flow remains smooth during sleep, and oxygen and nutrients are supplied to the mitochondria efficiently. In particular,



• Drink a glass of water (or warm water) when you wake up in the morning • Add a sip of water between cups of coffee or green tea

just by being conscious of these two things, the recovery process during sleep will proceed efficiently. —

④ Exercise increases mitochondria and improves sleep quality

As mentioned in the 6th article,
The reason you are told to 'exercise' during a health checkup—what mitochondria teach us"exercise" story
, exercise boosts both the 'quantity' and 'quality' of mitochondria,


at the same time.
And, if you exercise during the day— • A moderate sense of fatigue is created, • Body temperature rises, and sleepiness arrives as it drops later, • Deep sleep (non-REM sleep) increases. Scientifically, habitual exercise has been reported to improve sleep onset and sleep quality. In particular, for those in their 40s and older, I recommend:


• 3 minutes of radio calisthenics in the morning • 10 minutes of brisk walking during the day • Using the stairs instead of the escalator


just by being conscious of these three things, the quality of your sleep will change significantly. —

Chapter 5 | The 'Final Preparation' Before Bed

The 1–2 hours before bed are the
'final preparation time' for sleep—

how you spend this 'time before bed' will significantly change how smoothly you fall asleep and the quality of your sleep. —

① Prepare the bedroom environment

First, it is important to prepare the 'bedroom environment'. • Room temperature: Around 25°C in summer, around 15°C in winter • Humidity: 50–60% • Lighting: As dark as possible (blackout curtains are recommended) • Sound: A quiet environment Just by preparing this environment, the quality of your sleep will change significantly. —

② Dim the room lights 1–2 hours before bed

Before bed, it is important to spend time in a room that is as dark as possible. Why? Because exposure to bright light suppresses the secretion of melatonin (the sleep hormone). In particular, be careful with the blue light from smartphones, tablets, and PCs. Your brain will mistake it for 'daytime,' and sleepiness will be pushed away. Ideally, do not look at smartphones or PCs 1–2 hours before bed. If you must look at them, turn on the blue light cut feature or lower the screen brightness to the minimum. Even just doing this will change how easily you fall asleep. —

③ Bathe 1–2 hours before bed

For good sleep, the most effective habit is 'bathing'. The human body is designed to feel sleepy when the core body temperature drops from a raised state. That is why you should soak in a lukewarm bath of around 40°C for about 15–20 minutes, 1–2 hours before bed. Just by doing this: • Core body temperature rises, • Then it gradually drops, • And sleepiness arrives just at the right time for bed. Furthermore, after your bath, rinse only your ankles with cold water. If you add this, blood flow will improve even more, and your body temperature will drop more smoothly. —

④ Light stretching before bed

Light stretching of the neck, shoulders, and ankles before bed is also recommended. When muscle tension is released, blood flow improves, and the body enters 'rest mode' more easily. The point is 'not to overdo it.' Intense stretching is counterproductive— • Slowly rotate your neck • Slowly rotate your shoulders • Slowly flex and extend your ankles This level is enough. —

⑤ Take 5 deep breaths before bed, and have a sip of water

Deep breathing before bed makes the parasympathetic nervous system dominant and makes the switch to relaxation mode smoother. The method is very simple— • Slowly inhale through your nose (3 seconds) • Slowly exhale through your mouth (5–7 seconds) Just repeat this 5 times. With just this: • Your heart rate settles, • Your body's tension is released, • And sleepiness arrives more naturally. And—after deep breathing, drink 50–100ml of water. This keeps blood flow smooth during sleep, and oxygen and nutrients are supplied to the mitochondria smoothly. —

Final Chapter | Everything Begins with Sleep

Everything I have introduced so far—
deep breathing, cold exposure, hydration, and exercise.

In fact, all of these were
preparations for 'good sleep'.


Even while you sleep,
mitochondria work tirelessly,
preparing you for tomorrow.

The quality of that recovery—
depends on how you spend your waking hours.


In this era of the 100-year life—
both your 'health span' and 'beauty span'
are built upon the foundation of
'good sleep'.


When sleep is in order,
energy circulates,
cells recover,
and your mood looks forward.

Conversely, if sleep is disrupted,
no matter how hard you try at other things,
it is difficult to improve your condition.


That is precisely why—
regulating your sleep
is the starting point for living
lightly in the 100-year life era.

Because our tomorrow
begins with today's sleep.

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Afterword

Everyone knows from experience
that sleep is important.


Even though it is such an obvious habit,

we often find ourselves
staying up late saying 'just a little longer',
continuing to look at our smartphones saying 'just for tonight',
or cutting back on sleep saying 'I'm too busy'—


but those 'small accumulations'
surely influence your physical condition, your lightness of spirit,
and the quality of your day.
Mitochondria work without rest


even while you are asleep,
preparing you for tomorrow.
That is why—

while you are awake,
you should make the 'necessary preparations' for that.
This is the simplest

and most effective habit
that we can practice.
And, in fact—


for good sleep,
there is one more very important habit.
That is, 'soaking in the morning light'.

Next time,

I will explain in detail
the 'causal relationship between light and mitochondria'.
In this note, I will continue


to carefully deliver knowledge
to maximize your 'health span' and 'beauty span',
with a focus on mitochondria.
If this article

led to a positive feeling like
'maybe I'll try going to bed early today',
there would be nothing that makes me happier.
Thank you very much for reading until the end.

If you support me with a follow or a like,

it will encourage me to create the next article.
Please look forward to the next one ☺️