Coffee combined with cocoa can improve your attention span

Forget skinny soya milk lattes, the best way to get ahead at work is to grab yourself a full-fat mocha. That's according to scientists who studied the behaviour of people drinking coffee and hot chocolate over the course of a year. They found that while coffee boosts your energy levels, hot chocolate helps to relieve anxiety - and combining the two is the best way to improve your attention span. Subjects were given cocoa, cocoa with caffeine, caffeine without cocoa, and a placebo drink with neither caffeine nor cocoa. The study was double blind, meaning both the experimenter and the people taking part in the study were not aware of what drink was given to each participant.