Coffee without sugar is not providing the desired action, convinced the Spanish scientists. Sugar together with caffeine increases significantly better performance. These data were obtained during the study, 40 volunteers.
The experiment showed that it is the caffeine + sugar have the desired effect on the parts of the brain associated with attention and concentration.
Improve cognitive abilities. Increases the "memory" of the brain, the person may keep in mind large amounts of information quickly and use it at the right moment.
Coffee without sugar can boast such, say Spanish researchers.
Previously British scientists have proven that coffee can stimulate the production of hormones of happiness - serotonin and dopamine. They have an antidepressant effect and reduce overall propensity to suicide.