Green tea contains both caffeine and an organic compound known as catechin.

绿茶包含咖啡因和一种叫作儿茶酸的有机化合物。

Now, all dark chocolates are not created equal.

每块黑巧克力中的表儿茶素含量并完全相同。

First, they amplify the effect of catecholamines on blood vessels.

首先，它们会放大儿茶酚胺对血管的作用。

Peripheral dopa decarboxylase also exists, which can metabolize levodopa into dopamine before it gets through the blood brain barrier, and—via additional enzymes— metabolize it into other catecholamines like epinephrine, which can cause unwanted side effects like arrhythmias.

体内还有外周多巴脱羧酶，可以在左旋多巴穿过血脑屏障前将其转换为多巴胺；然后，通过其他酶将其转换为其他儿茶酚胺，如肾上腺素，它可以导的副作用，如律失常。

These two so-called " antidepressants" blocked the usual depletion of the catecholamines dopamine and norepinephrine and blocked the depletion of the monoamine serotonin.

这两种所谓的“抗抑郁药”阻止了儿茶酚胺、多巴胺和去甲肾上腺素的消耗，也阻止了 5-羟色胺这种单胺的消耗。

Alright the next dopamine-directed class of therapies are inhibitors of COMT, catecholamine-O-methyltransferase, which is an enzyme that degrades dopamine and levodopa.

下一个针对多巴胺的治疗药物是COMT抑制剂；COMT，即儿茶酚胺-O-甲基转移酶，是一种可以降解多巴胺和左旋多巴的酶。

Now, certain catecholamines can shift potassium movement into cells via the beta-2-adrenergic and alpha-adrenergic receptors on cell membranes.

某些儿茶酚胺能通过细胞膜上的beta-2-和alpha-肾上腺素能受体将钾移入细胞。

And catechins inhibit the action of lipases, which gives them a minor fat blocking effect.

而儿茶素则会抑制脂肪酶运动，从而产生微弱的脂肪阻隔作用。

Joseph Schildkraut deserves some credit for this, in 1965 he said that " some, if not all depressions are associated with an absolute or relative deficiency of catecholamines, particularly norepinephrine."

Joseph Schildkraut，该理论的发明者之一，在 1965 年说道：“某些抑郁症与儿茶酚胺缺乏，尤其是去甲肾上腺素缺乏有关。”

Cortisol also helps to maintain the blood pressure by increasing the sensitivity of peripheral blood vessels to catecholamines- like epinephrine and norepinephrine, and this narrows the blood vessel lumen.

皮质醇也帮助维持血压，增加周围血管对如肾上腺素和去甲肾上腺素等儿茶酚胺的敏感性，这会缩小血管腔。

On top of that, it's not entirely certain that even high amounts of epicatechin can ensure greater muscle growth, but the research does look promising.

最重要的是，还无法完全确定表儿茶素的高摄入量会必然提高增肌量，但此项研究仍很有前景。

These three are all technically monoamines but norepinephrine and dopamine are classified as catecholamines.

严格说来，这三种激素都属于单胺，但去甲肾上腺素和多巴胺也被归为儿茶酚胺。

Certain catecholamines can also shift potassium out of cells, and this is via beta-2-adrenergic and alpha-adrenergic receptors on cell membranes.

某些儿茶酚胺也可以将钾离子移出细胞，这一行为依赖于细胞膜上β2肾上腺素受体和α肾上腺素受体。

With roughly 150 milligrams of epicatechin supplementation per day, the 6 middle-aged subjects saw a 16.6% myostatin decrease and a 49.2% follistatin increase.

每日 150 毫克的表儿茶素补剂，使六位中年实验者的肌抑素降低 16.6%，卵泡抑素则增长了 49.2%。

And as showcased, this is a very likely scenario with epicatechin and the necessary amount can be obtained through dark chocolate.

那么前面所说的表儿茶素正好适用，所需用量可从黑巧克力中获取。

The belief is that dark chocolate can increase muscle growth because it contains the flavanol epicatechin.

有人相信黑巧克力可以增长肌肉，因为它富含黄烷醇表儿茶素。

The ones with the highest epicatechin content are the ones with the highest cocoa purity.

可可含量越高的黑巧克力表儿茶素才越高。

Time will only tell how effective epicatechin and dark chocolate can be.

能证明表儿茶素和黑巧克力功效的唯有时间。

Among the molecules secreted by gut bacteria are serotonin, GABA and catecholamines.

肠道细菌分泌的分子包括血清素、伽马氨基丁酸和儿茶酚胺。

And then certain chocolate derivatives, I believe epicatechins are also weak.

某些巧克力衍生物，我认为表儿茶素也是弱效的。