What are stimulants commonly referred to as?

Stimulants are commonly referred to as "uppers" because they enhance the activity of the central nervous system. This classification comes from their ability to increase alertness, attention, and energy, leading to heightened physical and mental performance. Stimulants can elevate mood and increase feelings of euphoria, making them appealing to users.

The term "uppers" effectively captures the way these substances impact the body and mind, contrasting with "downers," which refer to depressants that slow down brain function and reduce activity. The other terms listed, such as "side effects" and "inhibitors," describe different concepts and do not accurately relate to the classification of stimulants. Side effects pertain to the unintended consequences of a drug, while inhibitors typically refer to substances that decrease the activity of certain neurotransmitters or body functions, which is the opposite of what stimulants do. Thus, the correct term to describe stimulants is "uppers."