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

发光闹钟可以模拟日出的样子，让室内逐渐充满亮光。

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

视频中说，暴露在光线中是起床的重要一步，因为光会直接影响身体产出褪黑激素。

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

褪黑激素是一种藏在大脑中的荷尔蒙，对调节睡眠有重要影响。

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

黑暗中，褪黑激素开始产生，阳光下，褪黑激素又开始下降。

The team also suggests capping off your shower with a blast of cold water.

研究团队还建议要冲个冷水澡。

This is said to activate the regions of your brain that regulate wakefulness, causing you to feel alert.

据说这样能刺激调节大脑清醒的区域，能让你思维敏捷。

And, researchers have found that the shock of a cold shower can increase your metabolic rate to cut down on feelings of fatigue, the video explains.

并且，视频里说，研究者们发现冷水浴的刺激能加快新陈代谢，减轻疲倦感。

In another tip, they suggest drinking water first thing in the morning and throughout the day to stay hydrated.

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