Why does falling in love feel so amazing? What makes eating a second piece of cake, engaging in extreme sports, or getting a flurry of Facebook 'likes' deliver a rush? It's in large part about the chemicals coursing through the brain. Cover image: Shutterstock
Dopamine is a neurotransmitter that helps control the brain's reward and pleasure centers. Dopamine also helps regulate movement and emotional responses, and it enables us not only to see rewards, but to take action to move toward them.
The human brain has been called the most complex object in the known universe, and in many ways it's the final frontier of science. A hundred billion neurons, close to a quadrillion connections between them, and we don't even fully understand a single cell.