可可电台，每期节目一话题，让英语磨练耳朵的同时学到更多有益的小知识，丰富知识的同时受益于生活。

ways to improve your alertness and cognitive functionin the morning.

早晨提高你的警觉性及认知能力

Expose yourself to light

让自己暴露在灯光下

It's important to 'find the light' in order toproperly wake your body up.

为了彻底唤醒你的身体，“找到光源”很重要。

This can be done by opening the curtains, steppingoutside, or even using an illuminating alarm clock if you have to wake upbefore the sun.

可以拉开窗帘、走到外面去，甚至是，如果你必须在太阳升起前醒来，那就使用发光的闹钟。

These alarm clocks aim to imitate a sunrise andslowly fill the room up with light.

这些闹钟的目的是模仿日出，并慢慢地用光线填满房间。

Exposure to light is an important part of waking up,as it is directly linked to the body's production ofmelatonin.

暴露在光线下是唤醒你的一个重要部分，它直接与身体中的褪黑激素分泌有关。

Melatonin is a hormone secreted in the brain that plays a major role in regulating sleep.

褪黑激素是大脑分泌的一种激素，在调节睡眠中起着重要作用。

It's produced when you are in darkness, and drops when exposed to sunlight.

当你处于黑暗中，它就会产生，而暴露在阳光下它就会减少。

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