Therefore, if you're planning a long journey, you should always apply for the Russian visa before you leave. It's possible to get a tourist visa support at any moment before your journey, however, you can only apply for a tourist visa not earlier than 90 days before the date of your first entry to Russia.
Serotonin is a common neuromediator in the brain. It belongs to the group of so-called biogenic amines, relatively simple chemicals that facilitate the transfer of signals between the cells of the body.
Serotonin is a neurotransmitter that is synthesized, stored, and released by specific neurons in the brain. Natural Serotonin is involved in the regulation of several processes within the brain, including, depression, mood, emotions, aggression, sleep, appetite, anxiety, memory and perceptions.Serotonin regulates these processes through pathways that innervate (connect to) different brain regions.atural Serotonin is involved in the regulation of several processes within the brain, including, depression, mood, emotions, aggression, sleep, appetite, anxiety, memory and perceptions. Serotonin regulates these processes through pathways that innervate (connect to) different brain regions.