MDMA's stimulant properties, driven by increased dopamine, cause users to feel alert, talkative, excited, and motivated.

“what they found is that MDMA causing the release of dopamine is what really establishes the rewarding effects of an experience this isn't really a surprise we've known that MDMA just like cocaine or Methamphetamine or Adderall for that matter or Vyvanse for that matter creates big increases in dopamine that tend to couple an experience with a sense of reward and lead to changes in the neural circuitry that make the animal or human more likely to seek out that same experience again”