Alcohol and drugs have long been known to affect sexual activity . Alcohol , for example , can make someone " intoxicated " and loss of coordination , which means that it is more difficult to feel sexual sensation , so it will be difficult to have an orgasm .
Other addictive substances such as amphetamines , cocaine and ecstasy can also have the same effect , making it difficult for a person to reach orgasm , and particularly for a man to get an erection .
