The Effects of Caffeine on Your Body

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Caffeine is a natural stimulant most commonly found in tea, coffee and cacao plants.
It works by stimulating the brain and central nervous system, helping you to stay alert and preventing the onset of tiredness.
Caffeine is a naturally occurring compound found in plant species predominantly growing in the Tropic or Sub-Tropic regions of the world. Plants use caffeine as a natural pesticide since it is toxic to insects and other pests.
Caffeine is considered the most commonly used psychoactive drug in the world. A majority of adults consume it on a daily basis, and research is being done on its health benefits and consequences.

What are caffeine's effects on the body?
Stimulates your central nervous system, which can make you feel more awake and give you a boost of energy
Is a diuretic, meaning that it helps your body get rid of extra salt and water by urinating more
Increases the release of acid in your stomach, sometimes leading to an upset stomach or heartburn.

Where is caffeine found?
Caffeine occurs naturally in the leaves, seeds, or fruit of more than 60 plant species, including:
Coffee beans - seed
Tea leaves - leaves, bud
Kola nuts - seed
Cacao beans - seed
Guarana - seed
Yerba mate - leaf
Yoco - bark

To maximize the benefits, take a quick nap immediately after consumption in order to lower your adenosine count and give that caffeine more receptors to hook up to. The half-life of the drug is four to six hours, and most often your system is relatively clear after 12 hours.

Here are some other facts about caffeine:
1.Memory loss
2.Burns fat
3.Stiffens arteries
4.Improves mood
5.Brings on the shakes
6.Good for muscles
7.Bad for bones

Coffee is full of Riboflavin, an important B vitamin that boosts energy and metabolism. It's also packed with antioxidants that can fight diseases and boost your immune system. In fact, coffee has some protective effects on the liver, and may lower the risk of Parkinson's disease.

Caffeine and children

Children under 12 years old should not have more than 2.5 milligrams of caffeine per kilogram of body weight.

Age
Milligrams per day (mg/day)
Children, aged 4 to 6
45 (about one 355mL can of cola)
Children, aged 7 to 9
62 (about one and a half 355mL cans of cola)
Children, aged 10 to 12
85 (nearly two 355mL cans of cola)

chemical structure:

source:https://mic.com/articles/84925/14-surprising-facts-about-caffeine-explained-by-science#.ygasMwsHV