"xi needs to stay awake another hour to study for his english final, so he drinks several cups of cola. when he’s done studying, he finds that he can’t sleep even though he wants to, he feels agitated, his muscles twitch, his heartbeat is irregular, and he feels nauseated. what is causing xi to feel this way?

caffeine

Explanation:

Caffeine acts as the stimulant for someone to stay alert for a longer period of time however the high consumption of caffeine has its own side effects or disadvantages in one's body.

It may disrupt your usual sleeping pattern or cause you to stay awake longer that intended which may in return lead to some anxiousness.

It has an effect on the functioning of muscles which may lead to twitching .It affect digestive system which may cause other people to get diarrhea or even feel nauseous.

Question Options:

a. caffeine

b. insomnia

c. narcolepsy

d. sugar

Xi is feeling this way because of CAFFEINE.

Explanation: Caffeine is an alkaloid, C8H10N4O2, found naturally in tea and coffee plants which acts as a mild stimulant on the central nervous system.

Usually people take caffeine to make them "ready for the day". It's stimulation effect is believed to give energy and keep one active.

As a result of Xi consuming several cups is cola that contains caffeine, his nervous system has been stimulated and thereby kept active causing him to be unable to sleep.

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