Scientists have discovered that if they give amphetamines to a group of mice they will run wildly around in circles for 10 minutes and then drop dead.
科学家已经发现，如果给一组老鼠注射安非他命，它们会发疯地乱跑10分钟，然后死掉。
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Amphetamines were widely used as an antidote to neurotic depression into the 1960s, until such “pep pills” came to be seen as doing more harm than good.
Caffeine is a central nervous system stimulant that ACTS in many ways like other stimulant drugs such as amphetamines, waking you up and increasing your muscular activity.