The one good for cognitive

In the diagram above, Dr. Steiner has drawn the human being,
which is the micro cosmos, how this connection works with each
of the orbs in our solar system.
(to understanding of all that, may take another 1000 years)

Someone the lord of theory believes that caffeine specifically impacts the brains´s striatum in the basal ganglia, which helps us process positive words and make decisions. But his findings also indicate that dopamine aids in language comprehension.
In addition, the coffee to help you concentrate, such as Dr. Rudolf Steiner said, due to  understanding of the runs better.
It has now been found to the same.
Researchers already according to PLoS One  journal know that people who consume normal levels of caffeine perform better at basic cognitive tasks. 

Caffeine indirectly boosts dopamine transmission - a neurotransmitter that aids in reward-based learning - and Lars Kuchinke, a junior professor at Germany's Ruhr University, suspected this might lead to better acumen with word recognition by enhancing activity in the brain’s left hemisphere, which controls language.

The materialistic view comes near of one most effectively presented by Rudolf Steiner, who insists that the brain's primary function is not to be a generator of thought, but an organ of perception, and that what it perceives is the spiritual content inside of all matter - which he tells us is what thought really is, a proposition now beginning to be borne out in Quantum Physics. This view and some of its many ramifications has been clearly represented to the modern mind, inter alia, in the work of the Owen Barfield.