One of the greatest misunderstandings people have about the brain is their belief in “free energy”.

A new study done by Scott Hemby and colleagues at Wake Forest University of Medicine finds that long term cocaine use leads to “profound changes in brain function”.

Cocaine, Ritalin (amphetamines), and coffee all work differently on the brain, but in the end, they are all stimulants, and they can all induce euphoria by modulating the amount of the neurotransmitter dopamine.