The caffeine contained in coffee turns out to have interesting facts.
Due to the similarity of the molecule structures, caffeine can relate to the adenosine receptor in the brain cell. Adenosine is a transmitter nerve that sends impulses to the brain. When you consume caffeine, the molecule in it replaces the adenosine so it blocks the function that causes drowsiness and wakes the nerve cells' activity instead. This is the reason why people feel energized and refreshed after a glass of coffee.
The blood circulation and body tissues will absorb the caffeine in 45 minutes after the consumption. But it will need another 4 hours to get it out of the body. And it doesn’t mean all of the caffeine will be out completely. In fact, it needs 12 hours to destroy the caffeine in a cup of coffee. If you consume more than a cup a day, you will need more time to get the caffeine out of your body.
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If you consume too much caffeine, of course, it is not good for your body. It can even cause death from overdosage consumption. At the moment, many caffeine powders are sold freely in the market. It contains 100% of caffeine and people are using it to increase energy, to focus on studying, or to lose weight. Consuming 5 grams of caffeine is approximately like drinking 30-50 cups of coffee. The amount of caffeine that is safe to be consumed by an adult per day is 400 mg. For pregnant women, it will be 200 mg maximum.
Avoid coffee if you are currently stressed. Caffeine will increase stress by empowering the stress response in the body. It will also increase the blood pressure and heart pulse. This condition is even worse for people with hypertension and diabetes type 2.
The caffeine contained in the coffee tree, tea tree, and cocoa tree can function as natural pesticides. Even in higher dosages, it can also be an insecticide.