Prática de Shadowing: Why Do Humans Have to Pretend to Sleep to Fall Asleep? - Aprenda a falar inglês com vídeo
Escolha um modo de prática
Cada modo abre uma sala de prática em tela cheia.
212 frases
Se as frases estiverem muito curtas ou longas, clique em Edit para ajustá-las.
1
Every night, we all do something super weird that hardly anyone notices.
2
We have to pretend to be asleep.
3
You lie down in bed, pull up the covers, close your eyes.
4
You try to stay totally still, as if you are already fast asleep.
5
But the funny part is, you are still awake.
6
Your body is playing the part of someone deeply asleep.
7
While inside your head, your brain is replaying a conversation from five years ago, worrying about your to -do list for tomorrow,
8
or randomly digging up an embarrassing moment you have tried to forget for a decade.
9
And then the weirdest thing happens.
10
The act actually works.
11
You just keep pretending and boom, somehow you really fall asleep.
12
Why does a crucial biological process like sleep work in such a clunky way?
13
Why cannot we just lie down and fall asleep in a snap?
14
It turns out this silly nightly habit hides a crazy biological mechanism about how the human brain works.
15
Welcome back to Apex.
16
Today let us figure this out.
17
Why do humans have to pretend to sleep to fall asleep?
18
And the answer might completely change the way you go to bed tonight.
19
To understand this weird mechanism, first we need to bust a super common myth about sleep.
20
We usually think sleep is like a light switch.
21
You hit off, the power cuts out, it goes pitch black, your brain stops working, and you fall asleep.
22
Or, when you wake up in the morning, someone hits on, the light shines bright, and you are instantly awake.
23
But sleep doesn't work like that.
24
Your brain doesn't have an instant on slash off button at all.
25
Instead, in neuroscience, the human sleep and wake mechanism is called the flip -flop model.
26
Imagine there is an intense tug -of -war happening inside your brain between two different teams of brain cells.
27
On one end of the rope, the wake team, wake -promoting system, is packed in the midbrain and brainstem.
28
This team's job is to constantly pump out neurotransmitters to keep you awake, focused, and alert to your surroundings.
29
And on the other end of the rope, the sleep team, sleep promoting system, is located in a special brain area called the VLPO.
30
Completely the opposite.
31
The goal of this team is to send out inhibitory signals, forcing other areas in the brain to cool down and rest.
32
These two systems can't win at the same time.
33
They constantly block each other.
34
When the wake team is stronger, it forces the sleep team to be quiet it.
35
On the flip side, when the sleep team builds up enough energy, it overpowers the wake team and takes control.
36
And here's the key point.
37
The state where you lie down and pretend to sleep every night is exactly when the gray area shows up.
38
That is when these two systems are in a 50 -50 tug of war.
39
The wake team refuses to let go, while the sleep team is trying hard to pull the rope to its side.
40
You aren't really asleep yet, but you aren't fully awake anymore either.
41
Without this tug of war, if the brain switched from awake to asleep too fast in just a few seconds, that would actually be a sign that something is wrong.
42
In medicine, that condition is linked to narcolepsy, which can cause a person to suddenly fall asleep right in the middle of the day
43
while working or going about their normal life.
44
So if you have to go through a period of tossing and turning and pretending to sleep every night, don't be quick to get mad or worry that you are sick.
45
Actually, it is a completely normal biological sign that gives the brain time to safely switch from being awake to being asleep.
46
But the question is, how does the sleep team win that tug of war?
47
The first factor is a chemical called adenosine.
48
Imagine your brain is a rubber balloon and adenosine is the water being pumped right into it.
49
The longer you stay awake and think, the more water flows in.
50
This makes the balloon stretch out and get super heavy.
51
This tight feeling creates what science calls sleep pressure.
52
By the end of the day, this water balloon weighs heavily on your nervous system, making you want to close your eyes.
53
However, there is a fun fact.
54
The chemical pressure from adenosine alone is not enough for the sleep team to win.
55
It needs extra signals from your actions and the environment around you.
56
Why is that?
57
Let us go back in time millions of years ago, when our ancestors lived in natural caves or out on dangerous savannas.
58
Just think about it.
59
What if human sleep was designed so that whenever enough adenosine built up, your body just powered off right away, no matter what?
60
Even if you were standing in front of a tiger or in the middle of a huge storm, what would happen?
61
The human race would definitely have been wiped out a long time ago.
62
Because of this, evolution installed a super strict safety check system in your brain.
63
Before the sleep team is allowed to tell your senses to shut down, the brain needs a bunch of proof that there are no threats left around you.
64
And your act of pretending every night is exactly how you actively give your brain that proof of safety.
65
Lying back in bed signals that your body no longer needs to stay balanced to run away or fight.
66
Closing your eyes instantly cuts off visual information, confirming that your surroundings are safe.
67
Relaxing your muscles proves there are no threats forcing you to defend yourself.
68
And choosing to breathe slowly sends a signal to your nervous system that you are resting, not panicking or running away.
69
Simply put, when you lie down and pretend to sleep, you are sending a message to your brain's security system.
70
Everything is fine.
71
There are no enemies.
72
There is no danger.
73
The system can safely disconnect now.
74
But how exactly is that message sent?
75
How can you control a whole complex nervous system just by closing your eyes and lying still?
76
The answer lies in a super smart strategy.
77
You are using your own body to hack right into the deepest nerve network of your brain.
78
First up is the reticular activating system, or RAS for short.
79
This is a network of brain cells in the brainstem that acts like an information checkpoint.
80
Every second, millions of signals about sound, light, temperature, and touch flood into your body.
81
The RAS filters this information and only sends the important stuff up to your cortex so you can notice it.
82
When you lie down, turn off the lights, and close your eyes, you are starving the RAS.
83
There is no light to process and no movement to track.
84
Without these outside triggers, the RAS starts to slow down its activity body.
85
This puts your whole cortex into standby mode.
86
Next is the connection between your breathing and the autonomic nervous system.
87
Your autonomic nervous system is made up of two opposite branches.
88
Number one, the sympathetic system, or fight or flight.
89
This kicks in when you are stressed, making your heartbeat faster, and your breathing quick and shallow.
90
Number two, the parasympathetic system, or rest and digest.
91
This activates when your body relaxes, slowing down your heart rate, lowering your blood pressure and helping you recover.
92
When you are anxious or trying to force yourself to sleep, you usually breathe fast and shallow.
93
This triggers the fight or flight system to send an alarm signal to your brain.
94
But when you pretend to sleep, you often unconsciously copy the breathing of someone who is actually sleeping.
95
Deep, slow, and steady breaths from the belly.
96
This slow breathing creates physical pressure on the vagus nerve.
97
That is the pathway connecting your heart, lungs, and brain.
98
When the vagus nerve is triggered by slow breathing, it instantly sends out a biological command.
99
Release a chemical called acetylcholine to force your heart rate to slow down and drop your blood pressure.
100
This can be understood as a bottom -up effect.
101
You cannot just simply order your brain, go to sleep, but you can actively change your body's state, like by lying still and breathing slowly,
102
to indirectly put your brain into a resting state.
103
So when we are lying still and breathing slowly, what is actually happening inside our minds?
104
Now, let's talk about an experience that a lot of us have had.
105
You lie in bed for an hour, your eyes are closed, but your mind is still racing.
106
It feels like time is passing very slowly.
107
And when you suddenly open your eyes to look at the clock, you can only sigh another rough night i have been lying here this whole time
108
and could not sleep at all but the interesting thing is the feeling
109
that you were awake
110
that whole time does not always accurately reflect what just happened
111
in your brain in sleep science this is usually called sleep state misperception researchers can use an eeg
112
and sleep tests to pinpoint exactly when the brain
113
and body switch to sleep mode and then compare it to how the person actually felt about whether they slept or not.
114
And sometimes these two things do not match up.
115
A person might still feel like they are awake, but the tests show they have actually entered a light sleep stage.
116
Simply put, you think you are awake, but your brain has actually started to doze off.
117
And it is exactly during this time that you might run into a state called hypnagogia, the state right before sleep.
118
This is the middle ground when you are drifting from awake Wake to a sleep.
119
During this stage, you will have experiences like hearing vague sounds or someone calling your name, seeing random images and patterns floating in front of your eyes.
120
Your thoughts become super illogical and make zero sense.
121
Plus, there is another thing that a lot of people have definitely experienced.
122
A hypnic jerk.
123
That feeling of suddenly falling.
124
You are lying still and suddenly you feel like you just missed a step from up high or took a fall, making your whole body jerk.
125
Why does this happen?
126
From the view of evolutionary psychology, many scientists believe this is a leftover trait from our ancestors.
127
When you relax your muscles too fast while pretending to sleep, the part of your brain that hasn't caught up yet might mistakenly think your body is falling out of a tree.
128
It instantly shoots out a rush of adrenaline to make your muscles tense up to grab onto the branch.
129
So the next time you lie in bed and feel like you keep tossing and turning without getting any sleep.
130
rest assured it might just be a trick
131
and your brain has actually started the sleep process already
132
but hold on things do not just happen out of nowhere how does the brain know exactly
133
when it needs you to start pretending that is
134
when your biological clock steps in deep inside your brain there is a tiny area called the suprachiasmatic nucleus
135
or scn for short the scn constantly takes in light information
136
from your eyes to help your body sync up with the day and night cycle.
137
When night falls, the SCN sends a signal to your pineal gland to start making melatonin.
138
That is the hormone that makes you feel sleepy.
139
It does not put you to sleep directly.
140
Instead, it acts like a guide, letting your whole body know, night is here, get ready to switch into rest mode.
141
But the way we sleep today was not always like this.
142
So how has our sleep changed over millions of years of evolution.
143
To find the answer, we have to go way back in time.
144
If we compare humans to other primates, like chimps or orangutans, our sleep has a super unique evolutionary history.
145
Our primate ancestors used to sleep up in the trees.
146
Up there, they slept to stay safe from dangers on the ground.
147
But that also came with risks, like falling out of the tree or dealing with predators.
148
But when ancient humans learned to control fire and slowly moved down to live on the ground, everything started to change.
149
The fire brought safety and warmth.
150
Humans started getting solid, longer stretches of sleep at night.
151
Still, the ground was full of hidden dangers.
152
Falling into a deep sleep out in nature, even with a fire to protect them, meant they had to stay on high alert.
153
That is why the pretend -to -sleep safety check became so strict for humans.
154
There is a very famous historical theory that says, in parts of Western society before the Industrial Age, people usually had segmented sleep.
155
First sleep.
156
Going to bed in the early evening.
157
The awake time.
158
Waking up for a bit in the middle of the night.
159
Second sleep.
160
Going back to sleep until morning.
161
And that brings up a really cool point.
162
Waking up in the middle of the night is actually a totally natural part of human history.
163
Our sleep might be way more complicated than just one solid block of sleep from night until morning.
164
Understanding evolutionary history helps us understand our bodies better.
165
But there are nights when the harder you try to sleep, the more wide awake you are.
166
Why does this backward thing happen?
167
The number one enemy ruining it is cortisol, the stress hormone.
168
When you fall into a state of tossing and turning and start worrying, Oh no, it is already 2 a .m.
169
I only have four hours left until I have to wake up for work.
170
Your brain cannot tell the difference between worrying about work and worrying because there is a wild animal outside.
171
It sees that anxiety as a danger signal and releases cortisol along with adrenaline.
172
Instantly, your heart rate goes up.
173
And the wake team in the flip -flop model takes back the upper hand.
174
At this point, no matter how hard you try to pretend to lie still, your body inside is still in fight mode.
175
So how do you get through these sleepless nights?
176
Psychologists and neuroscientists suggest two super effective techniques.
177
One, paradoxical intention.
178
Sleep is an automatic system.
179
It is just like digesting food or healing a wound.
180
You cannot force it directly with your willpower.
181
The harder you try to sleep, the more you fail.
182
The paradoxical intention technique tells you to do the exact opposite.
183
Just lie there, close your eyes, and tell yourself, I am just going to lie here
184
and rest and try to keep my mind awake for a little bit longer.
185
When you take away the pressure that you must sleep, the anxiety goes away.
186
Cortisol drops, and without even trying, the sleep team gets a chance to put you to sleep.
187
2. Cognitive shuffling When we lie there pretending to sleep, our brains often have a habit of running logical thoughts,
188
analyzing the past, planning for the future, or calculating money.
189
These logical thoughts are a sign that the prefrontal cortex is still working hard.
190
The cognitive shuffling technique helps you break this chain of logical thinking by forcing your brain to process random images
191
that have nothing to do with each other.
192
The way to do it is really simple.
193
You think of a word, for example, the word bed.
194
For the letter B, imagine a bear, a book, a baby.
195
For the letter E, imagine an egg, an eye, an elephant.
196
For the letter D, imagine a door, a desk, a dress.
197
Constantly picturing these random and meaningless images will perfectly copy the free -thinking state, hypnagogia, of the brain right before you fall asleep.
198
It sends a signal to your cortex that logical thinking has let go, it is time to go into a deep sleep.
199
So, we have gone on a whole journey together to figure out what seems like the silliest human habit every night.
200
It turns out, having to lie down, close your eyes, pull up the blankets, and pretend to lie still is not crazy at all.
201
It is a safety feature that evolution gave to humans.
202
It is the time when you patiently send out safety signals calm your nervous system, and create the perfect setup for your brain to hand over power from the wake team to the sleep team.
203
Next time you get into bed, pull up the covers and find yourself pretending to sleep in the dark.
204
Do not worry or push yourself to fall asleep right away.
205
Just relax.
206
Your body is simply doing a survival trick that helped our ancestors stay alive for millions of years.
207
You just need to do your part well.
208
Give those safety signals, relax your breathing, let go of logical thoughts, and let the amazing nervous system inside you handle the rest.
209
If you found this video helpful and it helped you understand sleep better, do not forget to hit OA, like, subscribe to the channel,
210
and turn on the notification bell to catch the next videos from Apex Psychology.
211
Have a really great sleep tonight.
212
Goodbye, and see you next time.
Baixar aplicativo
Tudo o que você precisa para falar fluentemente
Pronúncia com IANota em cada frase
Prática de IPADomine cada som
VocabulárioMonte seu banco de palavras
Jogo de vocabulárioAprenda brincando
Mesmo canal
B21
Why Do You Keep Waking Up at 3AM (The Strange Psychology Behind It)
Daily ConversationWorking Adults
B24
Psychology of People Who Go Quiet When They’re Hurt
Daily ConversationWorking Adults
C17
The Psychology of People Who Love Cats
University StudentsWorking Adults
C14
The Psychology of People Who Are Too Aware
Business EnglishUniversity StudentsWorking Adults
C18
Why People Who Prefer Being Alone Often Had This Childhood | Hidden Psychology Truth
University StudentsWorking Adults
C14
Where Do You Go When You Sleep?
Daily ConversationUniversity StudentsWorking Adults
C12
Psychology of People who Imagine FAKE Scenarios
Daily ConversationUniversity StudentsWorking Adults
C15
Psychology of People Who Imagine Fake Scenarios Before Sleep
Daily ConversationUniversity StudentsWorking Adults
C114
The Psychology of People Who Feel Everything Deeply
Daily ConversationUniversity StudentsWorking Adults
C11
Psychology of People Who Have No Friends
University StudentsWorking Adults
C112
Why Do We Dream? (The Strange Psychology Behind It)
Daily ConversationUniversity StudentsWorking Adults
C143
People Who Think Too Much | Psychology Explain
Business EnglishUniversity StudentsWorking Adults
FOR YOU
Vídeo recomendado
C1182 frases
Every Sleep Disorder & Their Effects Explained
Daily ConversationUniversity StudentsWorking Adults
C111
79 frases
The 15% Rule: How to Learn Faster | Andrew Huberman
Daily ConversationUniversity StudentsWorking Adults
C15
66 frases
How to sleep better by knowing your chronotype
Daily ConversationUniversity StudentsWorking Adults
C12
364 frases
It's Boring, But These 5 Habits Will Change Your Life.
Daily ConversationUniversity StudentsWorking Adults
C14
65 frases
The shock of doing nothing | Andrew Holecek
Daily ConversationUniversity StudentsWorking Adults
C111
121 frases
Neuroscientist Explains: Why You're Always Tired (and How to Fix It)
Daily ConversationUniversity StudentsWorking Adults
C1279
4 frases
Sleep Is Your Superpower - Matt Walker
Daily ConversationUniversity StudentsWorking Adults
C112
98 frases
How To Fall Asleep In 2 Minutes
Daily ConversationUniversity StudentsWorking Adults
C12
53 frases
Why Do You Lose Track of Time When You’re Having Fun?
Daily ConversationUniversity StudentsWorking Adults
B26
183 frases
Why Babies NEED to Sleep Next to You (Science Explained)
Daily ConversationUniversity StudentsWorking Adults
Objetivos de fala para este clipe
Este vídeo é perfeito para quem quer aprimorar a fluidez na fala em inglês, especialmente na articulação de conceitos complexos e na pausa natural. O diálogo mistura explicações científicas com linguagem coloquial, o que ajuda a treinar a transição entre registros, um marco crucial para a comunicação eficaz. Além disso, ele é ideal para praticar o shadow speech, uma técnica comprovada para alinhar a pronúncia e o ritmo com o nativo.
Banco de frases reutilizáveis
- "Every night, we all do something super weird that hardly anyone notices." (Toda noite, todos fazemos algo super estranho que quase ninguém percebe.)
- "It turns out this silly nightly habit hides a crazy biological mechanism." (Acontece que esse hábito noturno bobo esconde um mecanismo biológico louco.)
- "We usually think sleep is like a light switch." (Normalmente, pensamos que o sono é como um interruptor de luz.)
- "The longer you stay awake and think, the more water flows in." (Quanto mais tempo você fica acordado pensando, mais água entra.)
Essas frases são excelentes para o shadowing em inglês, pois combinam estrutura gramatical básica com vocabulário específico, facilitando a memorização e a aplicação em contextos reais.
Corrija seus pontos fracos
O maior desafio neste vídeo é a pronúncia de palavras com tons altos e baixos, como "neuroscience" (neurologia) e "adenosine" (adenosina), além da pausa entre cláusulas complexas. Para superá - los, use um shadowing site para repetir as frases em tempo real, focando em imitar a entonação e a duração das sílabas. O shadowspeaks é uma técnica eficaz aqui: ouça uma frase, pause e repita imediatamente, tentando igualar a velocidade e a energia do narrador. Isso não só melhora a pronúncia em inglês, mas também a confiança na fala. Lembre - se: a chave é a prática constante, pois o cérebro aprende melhor com a repetição imitativa.
Gramática neste vídeo
As estruturas que o falante mais usa, com as palavras exatas do vídeo:
| Estrutura | No vídeo |
|---|---|
| Present perfect have/has + particípio passado — uma ação passada que ainda importa agora | have tried · have been wiped · have had |
| Voz passiva be + particípio passado — o foco está no que acontece, não em quem faz | is called · is located · is linked |
| Orações relativas who / which + oração — informação extra sobre uma pessoa ou coisa | narcolepsy, which can · someone who is |
O que é a Técnica de Shadowing?
Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.