The US researchers say that a small amount of chocolate at breakfast increases brain activity ensuring a productive brain work during the entire day.

The fact that chocolate is useful was known earlier. However this time researchers conducted a series of experiments to find out how the chocolate affects the function of brain. The experiment involved 50 volunteers. They were divided into two equal groups, which were monitored during a month , reports Rosbalt.

The first group was eating about 100 grams of chocolate for breakfast every day. The second group had their usual breakfast daily. Every week, all participants received tasks, which they should have performed by the end of a relevant period. As it turned out , the group that ate chocolate at breakfast every day performed the tasks better than the other group.