Latte is a kind of coffee, so it contains caffeine. Caffeine mainly stimulates the nervous system of the body and affects other systems of the body, including circulation, digestion and excretion systems, so it can keep people awake and easily lead to insomnia.
Caffeine blocks adenosine, a neurochemical that increases all day. With the accumulation of adenosine, individuals will feel more sleepy and less alert. "Cunning" caffeine mimics the existence of adenosine in the body, thus preventing brain cells from recognizing the actual adenosine.
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Coffee has certain health value. Drinking coffee every day may have potential benefits for the regulation of blood sugar and uric acid. At the same time, it also has diuretic, stimulating the central nervous system and respiratory system, and boosting the spirit. However, caffeine in coffee can't relieve fatigue, only by stimulating the nerve center to cover up fatigue, so it is not appropriate to drink coffee for a long time to boost the spirit.
Coffee also has negative effects. Some people will have negative effects such as rapid heartbeat, palpitation, excessive excitement and insomnia after drinking coffee. Some people are allergic to caffeine in coffee, and these people will have some uncomfortable symptoms after drinking coffee.