Then there is the nicotine: a stimulant that for the addict also has the added effect of calming the nerves.
Because cigarettes can be either a stimulant or a relaxant, the game has two modes.
What's interesting about the study's finding is that it dodges the trap that snares much of the research on stimulant medication.
stimulant stim·u·lant (stĭm'yə-lənt)
An agent that arouses organic activity, strengthens the action of the heart, increases vitality, and promotes a sense of well-being. adj.
Serving as or being a stimulant.