Cocaine provides a powerful, direct hit to the pleasure center of the brain.
It is wildly addictive and highly dangerous. Laboratory monkeys have proved time and again that they would readily die for more cocaine. Plenty of people have proved this point as well. Sometimes, a single dose of cocaine can be fatal. As a strong stimulant, cocaine speeds up the heart, dilates the pupils, raises body temperature and constricts blood vessels while forcing more blood through these vessels.