When this happens, our sympathetic nervous system triggers a fight-or-flight response.

当这种情况发生，我们的交感经系统触发战斗或逃跑反应。

The HPA Axis is essentially the endocrine system's companion to the sympathetic nervous system.

HPA 轴本质上是内泌系统与交感经系统的伴侣。

Part of what keeps your heart under control is your parasympathetic nervous system.

保证心脏处于可控状态的因是你的副交感经系统。

If the heat generated is intense enough, the body's parasympathetic nervous system is triggered, which creates a relaxation response.

如果产生的热量足够强烈，身体的副交感经系统被触发，从而产生放松反应。

Once the rectum is filled and stretched, signals travel to parasympathetic neurons in the spinal cord, initiating the defecation reflex.

当直肠被粪便填满并受到牵拉，向脊髓内的副交感经元发出信号，启动排便反射。

Well, the first half of your breath, the inhale, influences your sympathetic nervous system, which controls your fight or flight response.

呼吸的前半，吸气，影响你的交感经系统，该系统控制战斗或逃跑反应。

The parasympathetic is coming in to just tamp down the threat response a little bit.

副交感经的作用只是稍微抑制威胁反应。

It's part of our sympathetic nervous system, so we'll breathe.

它是我们交感经系统的一， 所以我们呼吸。

Emotional distress and other overreactive sympathetic nervous system activities typically trigger insomnia.

情绪困扰和其他过度活跃的交感经系统活动通常引发失眠。

We are not meant to live chronically in the sympathetic nervous system.

我们不应该长期生活在交感经系统的状态中。

My sympathetic nervous system is not giving way to my parasympathetic.

我的交感经系统没有让位于副交感经系统。

So then your sympathetic nervous system is on high alert and your body feels unsafe.

于是，你的交感经系统高度警觉，身体感到不安。

And getting back to baseline is what our parasympathetic nervous system does predominantly.

恢复到基础状态主要是我们的副交感经系统所负责的。

It makes sense to me too, from parasympathetic angle, right?

从副交感经的角度来看，这也说得通，对吧？

But I think their sympathetic nervous system is way, like very dominant.

但我觉得他们的交感经系统非常占主导地位。

Might be a little better for before bed because it's more... More parasympathetic.

可能更适合睡前进行，因为它更具...副交感经的特性。

That is where your sympathetic system's more mellow half-brother, the parasympathetic system comes in.

这是你的交感经系统更成熟的同父异母兄弟——副交感经系统的用武之地。

This happens thanks to the parasympathetic division of the autonomic nervous system.

这要归功于自主经系统的副交感经支。

Our SNS reserve kicks in at times of mortal danger.

在面临致命危险，我们的交感经系统储备被激活。

One is the sympathetic nervous system that governs fight or flight.

一个是支配战斗或逃跑反应的交感经系统。