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 cognitivefunction in the morning.

早晨提高你的警觉性及认知能力

Hydrate yourself

为自己补水

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

他们推荐的另一个方法是早晨起来先喝水，并且在一天里都要补水。

While sleeping, you will sweat, breathe, and get upto use the bathroom, and these things all work to dehydrate the body.

睡觉的时候，你会出汗、呼吸、起床去卫生间，所有的这些事都会使身体脱水。

Even mild dehydration can take a toll, decreasing alertness and mental concentration, and contributing to fatigue.

哪怕只是轻度脱水也能使警觉性和精神集中度降低，并导致疲劳。

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