This wonder drug keeps Wall Street's bankers going for 90 hours a week; what is it, and why is it in massive demand?

Wall Street bankers have one of the toughest jobs in the United States, with their working hours being nearly 90 hours a week. Now, in order to 'survive' through their work hours, reports are suggesting that they are snorting lines of Adderall at work, which is ow becoming a major concern.