Theanine has obvious anti-anxiety effects. The anxiety model experiment of the model organism zebrafish showed that theanine in the concentration groups of 250 μg/mL, 500 μg/mL and 1000 μg/mL had no toxic and side effects on zebrafish, and their anxiety-relieving effects reached 12% and 15%, respectively. and 18%. In particular, the anxiolytic effect of theanine in the 1000 μg/mL concentration group was comparable to that of selegiline.
L-theanine can promote the generation of alpha waves on the surface of the brain, making the human body feel comfortable and happy. When measuring the effect of L-theanine on the metabolism of monoamines in various parts of the brain, it was found that theanine can significantly promote the release of dopamine in the central brain and improve the physiological activity of dopamine in the brain.

Chocolate is a good protector for probiotics. Relevant studies have shown that the ratio of probiotics in the chocolate base through the stomach is significantly higher than that in the milk base, and the survival rates of Lactobacillus helveticus and Bifidobacterium longum are 91% and 80%, respectively.
