Individuals without ADHD who take stimulant medications experience enormous increases in dopamine, leading to euphoria and heightened focus.

“for people who do not have ADHD as a child or for people that do not have ADHD in adulthood if they were to take any truly any of the compounds that we're talking about thus far methylphenidate Ritalin Adderall vivance dexedrine and certainly methamphetamine what we observe from neuroimaging studies is that these people get enormous increases in dopamine they're not familiar with these drugs so the increases in dopamine are just Cosmic for them they experience a lot of euphoria even if the dosages are low the Euphoria is associated with a very heightened degree of focus they've never really felt before”