Melatonin is a hormone secreted by the brain, and is critical in regulating your sleep.

激素是种大脑分泌用来调节睡眠程度的荷尔蒙。

Yes, he is. He's a walking hormone.

没错 他是 他就是个行走的荷尔蒙。

Think of that as the stress hormone.

把它想象成压力荷尔蒙。

So stressful hormones dip, and happy hormones rise.

所以压力荷尔蒙下降的时候，快乐荷尔蒙会上升。

The hormones released when we are hungry are the same as our fight or flight hormones.

我饥饿的时候所释放的荷尔蒙跟我的战斗或逃跑荷尔蒙是一样的。

And the stress hormones were way up in that first group.

第一组的压力荷尔蒙高出很多。

I prefer to think of it as the affection hormone.

我更倾向认为它是情感荷尔蒙。

Well, they're gonna have to use pheromones and scent markers.

它得透过释放荷尔蒙和气味标志才行。

Who knew that a few hormones could all do that.

又有几个荷尔蒙就能做到这一点。

They possess tryptophan, which helps create brain soothing hormones.

它拥有色氨酸，帮助脑部释出舒缓荷尔蒙。

A couple of the big ones are a hormone called leptin.

几个大的是一种叫做瘦素的荷尔蒙。

And they mostly have to do with sex. And your hormones.

它大多与性有关。还有你的荷尔蒙。

In the 1900s, researchers started honing in on the concept of hormones.

二十世纪，研究人员开始推敲荷尔蒙的概念。

The adrenaline also triggers the release of the stress hormone cortisol.

肾上腺素还会触发压力荷尔蒙皮质醇的释放。

We met these hormones in this video.

我在这个视频中认识一下这些荷尔蒙。

I know how to kill that stress hormone, cortisol.

我知道如何杀死压力荷尔蒙——皮质醇。

I'm on the hormones, and you've been extra frisky lately.

我最近荷尔蒙飙升 你变得也异常活跃。

Melatonin is the hormone of darkness.

激素是暗的荷尔蒙。

Your adrenal gland releases the stress hormones cortisol, epinephrine, also known as adrenaline, and norepinephrine.

你的肾上腺会释放压力荷尔蒙皮质醇，肾上腺素，以及去甲肾上腺素。

They call oxytocin the love hormone.

他称催产素为爱情荷尔蒙。