It is dangerous that you will be nervous until the end of your life "I drank coffee more than 2 times a day") There is not enough precise wording for a clear answer. What is coffee drinking? It is different for everyone. Someone has 30 ml of freshly roasted eco-grain espresso in a fashionable coffee shop, someone has an instant nescafe with milk and sugar, a 400 ml cup + a cigarette.
Coffee stimulates the central nervous system and vascular system, which leads to their rapid wear. It also increases blood pressure. It causes a slight addiction, which adversely affects the functioning of the body.