When CNS stimulants are consumed, they trigger a cascade of biological responses. These include increased heart rate, elevated blood pressure, and enhanced respiratory rate. The stimulants achieve these effects primarily by acting on the brain's reward system, which can create a sense of euphoria or well-being. However, excessive stimulation can lead to adverse effects such as anxiety, insomnia, and in severe cases, seizures. Chronic use may also lead to tolerance, dependence, and addiction.
