The short video shows the ancient times, and the emperors cried with envy!

Chapter 721 Is love-brain really brainless? ! Phenylethylamine: It’s true!
The scene changed, and new content appeared on the sky curtain.

【Science can always reveal the truth behind all beautiful things, and love is no exception. 】

[People often say that love is the thrill of falling in love at first sight, the moment when your heart beats faster, but this is actually all caused by adrenaline.]

[When you see someone you like, adrenaline will be secreted quickly, making your heart beat faster and your palms sweat. ]

[But relying on adrenaline alone is not enough. Serotonin is the key to whether you have the courage to speak. ]

[If your serotonin level is too low, you will become anxious and uneasy, and you won’t dare to express your feelings even if you are attracted to them.]

[Dopamine is even more interesting. It makes you have a constant desire for delicious food and beautiful women.]

[When you see your crush, dopamine makes you feel happy and excited, and this feeling can make you addicted. ]

[Oxytocin is known as the hug hormone, and it can enhance trust between people.]

[When oxytocin levels drop, people are more likely to feel suspicious and insecure, which is often a precursor to cheating.]

[Ultimately, the length of telomerase will determine who dies first.]

【So, love is nothing more than a precise chemical reaction. 】

[A romantic encounter in the vast sea of ​​people is nothing more than a clever pairing of hormones. ]

[Those warm moments of watching the sunset together are just the perfect combination of various chemicals in the brain. 】

[However, maybe in the end, only Five Fingers Girl and you are truly in love. ]

After hearing what was said on the sky curtain, the ancient people looked at each other in confusion.

What is this all about?
They all sound like our Chinese characters, but why can't I understand them when put together?
Adrenaline, serotonin, dopamine, what are these?
Could it be some kind of magic pill?
What are chemical reactions and how do they occur in the brain?

Some ancient people began to count on their fingers: "Adrenaline, serotonin, dopamine, oxytocin, telomerase, so many hormones, could it be that the five immortals have descended to the world?"

"If it is really a magic from the immortals, it is too weird to be able to control people's love affairs! Could it be that these things are Yue Lao?"

"If these elements can really determine a person's life or death, then they are more terrifying than poison!"

The picture on the sky curtain changed again.

【Have you ever had such an experience? 】

[When I see my sweetheart, I want to talk, but I always hesitate. 】

[I wanted to get closer, but my legs couldn't help but go weak. ]

[I tried to appear calm, but my face became hot and red uncontrollably.]

[And the culprit behind all this is norepinephrine. 】

[Norepinephrine is a special chemical that exists in our bodies. ]

[It is rapidly released in the body when we encounter danger.]

【It makes our heart beat faster and our blood pressure rise. 】

[Muscles also tense up in preparation for fight or flight.]

[It even makes us breathe faster to provide more oxygen.]

[These reactions are all to enable us to better protect ourselves when danger comes. ]

[But strangely, these reactions also occur when we meet someone we like.]

[This is because in ancient times, finding a partner was also a risky thing. ]

[You don’t know whether the other person will accept you, nor do you know whether you will be rejected. ]

[This uncertainty is interpreted by our brain as a potential threat.]

【So, norepinephrine kicks in. 】

[These reactions are completely beyond our control, just like we cannot control ourselves from being moved.]

【So next time you meet someone you like. 】

Please don’t feel bad about your performance.

【Because all this is the masterpiece of norepinephrine. 】

[It is just telling you in the most primitive way: you are moved. ]

After hearing these words, the ancients understood roughly what was going on.

"It turns out that the reason why I feel helpless when seeing my beloved is because of this thing in my body."

"Since it can make people's hearts beat faster, does that mean it can also scare people to death?"

"It's possible. It's not like there haven't been people who died this way..."

The Tang Dynasty plane.

After listening to the description of norepinephrine on the sky curtain, Li Shimin couldn't help laughing. All this reminded him of the scene when he first met Empress Changsun.

It was at Wang's home in Taiyuan, where the young Li Shimin visited with his father Li Yuan.

At that time, Changsun Wugou was still a fourteen-year-old girl, sitting in the hall and drinking tea with everyone.

That day, Changsun Wugou wore a light purple skirt and had her hair tied up high, looking elegant and refined.

As soon as Li Shimin entered the room, he was attracted by her and forgot to greet her until his father Li Yuan coughed to remind him.

The young Li Shimin was at a loss, unable to even hold the teacup steady, and spilled tea all over himself.

However, Changsun Wugou remained calm, stood up, took out the silk handkerchief and handed it to the embarrassed boy.

When Li Shimin took the handkerchief, his hands were shaking and he stuttered even when he said thank you.

Now that I think about it, it must be the norepinephrine that is causing the problem.

No wonder my heart was pounding, my face was red, and I couldn’t even speak clearly.

Later, during his campaigns, Li Shimin often thought of that dignified and elegant girl.

Until he expressed his feelings to his father and asked to marry Zhangsun Wugou.

After marriage, Zhangsun Wugou lived up to expectations and became not only virtuous but also resourceful.

She can be said to be an excellent and virtuous wife.

【When we say a person falls in love, there are actually two chemicals at work.】

Norepinephrine controls your body's responses.

【And dopamine dominates your brain activity.】

【Dopamine is a neurotransmitter that makes people feel happy and satisfied.】

【It’s like a reward system in the brain.】

【When we make the right choice, dopamine is secreted. 】

[This substance will make people have endless desire and expectation. ]

【For example, longing to receive messages from the other party. 】

[Expect the other person to respond to your affection. ]

[When these expectations are met, dopamine is released in large quantities.]

[This is why we get so excited when our crush texts back.]

[During the period of passionate love, dopamine secretion reaches its peak. 】

[At this time, as long as you see the other person's photo, your heartbeat will speed up. 】

【Just thinking about each other makes me happy. 】

[You may even feel like you have found the love of your life. ]

[But this state can only last for three to six months. ]

【Then dopamine levels return to normal.】

【Love will also become dull. 】

[Many couples’ conflicts start from this time. ]

[But why can some people still love each other for many years? ]

[This is thanks to another substance - phenylethylamine. ]

[Phenylethylamine is a natural stimulant.]

【It stimulates the area of ​​the brain that controls emotions.】

【It gives people a lasting sense of pleasure.】

[It also inhibits brain areas responsible for attention and memory.]

【This is why people in love are always absent-minded. 】

[Even simple things can be remembered incorrectly.]

[I was working hard the last second. 】

[The next second, I started to have random thoughts. ]

【So being in love is not a joke. 】

【It will really make your brain go blank! 】

(End of this chapter)