Tea
There are several substances in tea. The effects of these substances on the brain differ. Caffeine, for instance, stimulates the brain cells (neurons) in the same manner with the catecholamines such as dopamine, quickening the neurons to burn their fuels (glucose and ketones) to release energy fast to enhance reasoning.
Polyphenols such as epigallocatechin-3-gallate (EGCG) are good antioxidants, that protect the brain from the attack of the free radicals.
Theamine, also found in tea, enhances cognitive performance of the brain. It also has calming effect associated with the brain's alpha waves, which is indicative of relaxation without dizziness.
Cumulatively, the substances in tea help the brain perform optimally, and protect the neurons from undue damage.
Festus C. Anaba, B Med. Sci. Physiology
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