▍原文
There's real science behind why many recommend warm milk before bed, and it has to do with chemicals inside the milk: melatonin and tryptophan.
Tryptophan is known as the cause of wanting a nap after eating a large Thanksgiving meal. Turkey contains a lot of tryptophan. When ingested, tryptophan releases serotonin (happiness chemicals) and melatonin (sleep chemicals) in the brain.
This is why you may see some individuals taking a melatonin supplement at night to aid with sleep.
▍语言点
(be) to do with: 与……有关
· be related to: 与……有关
melatonin /ˌmeləˈtəʊnɪn/: n. 褪黑素tryptophan /ˈtrɪptəfan/: n. 色氨酸
be known as: 以……著称
nap /næp/: n. 小睡
· take a nap: 睡午觉;小睡一下
contain /kənˈteɪn/: vt. 包含
release /rɪˈliːs/: vt. 释放
serotonin /ˌserəˈtəʊnɪn/: n. 血清素
individual /ˌɪndɪˈvɪdʒʊəl, ˌɪndəˈvɪdʒuəl/: n. 个体supplement /ˈsʌpləmənt/: 补充物;补剂
aid with: 帮助
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