What is Crack Cocaine? Is an alkaloid found in leaves. Of the South American shrub Erythroxylon coca. It is a powerfully reinforcing psychostimulant. The drug induces a sense of exhilaration in the user primarily by blocking the reuptake of the neurotransmitter dopamine. Activation of dopamine D2 receptors induces release of an endogenous opioid peptide that binds rewardingly to mu opioid. Receptors in the nucleus accumbens. If the predictions of The Hedonistic Imperative.

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It seems appropriate to comment on it as its Friday the 13. I realised the other day that I had absolutely no idea why this notorious Friday was singled out as being so special. After all, Thursday the 12. What sparked my interest was a chat I was having with a mate, who pointed out to me that it was cheaper to fly on Friday the 13th than it is on any other Friday. Why would that be? Know why Friday 13. So the unlucky day it.