Question

tea and coffee are refreshing drinks. give reasons

Answer 1

Tea and coffee contain a substance known as caffeine which is a simple sense refreshes the body by inhibiting a substance that causes drowsiness and sleepiness.
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There are several known mechanisms of action to explain the effects of caffeine INTO A DEEP LEVEL.
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The most prominent is that it reversibly blocks the action of ADENOSINE on its receptor and consequently prevents the onset of drowsiness induced by adenosine.
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Caffeine also stimulates certain portions of the autonomic nervous system.

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Answer 2

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Question:-Tea And Coffee Are Refreshing Drinks. Give Reasons.

→Usually We Drink Coffee Or Tea When We Are Tired Or When Feel Sleepy.Both Of Them Means Coffee And tea Contain With 'Caffeine' Which Actives Our Nerve.

Tea Contain With More Number Of Potentially Bioactive Chemicals, Including Flavonoids,Amino Acid, Vitamine,Caffeine.W which Gives Strength In Our Organs.And Coffee Contains More Caffeine.

So they Are Refreshing Drinks..

Hope My Answer Helped