Drugs effect on human

Write a 3-4 page essay on the biological effects on the brain and body of a particular substance (you are free to choose any type of drug)such as drugs, alcohol, caffeine, etc. There are three different classes of drugs. stimulants, depressants, and hallucinogens. Please choose one particular drug and write a research paper, APA format (double space, 1" margins, properly cited with reference page) with at least 4 academic references (excluding websites). Include the effects your particular drug wilt have on behavior, emotions, and the brain.