Drugs such as caffeine that excite neural activity and speed up body functions are

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Quizplus · Accepted Answer

Stimulants are drugs that increase neural activity and bodily functions, such as caffeine which increases alertness and energy. Barbiturates are depressants that slow down the central nervous system. Narcotics are pain relievers that can also have a depressant effect. Endorphins are natural chemicals produced in the brain that act as painkillers and mood enhancers.

Drugs Such as Caffeine That Excite Neural Activity and Speed