Caffeine has been known to give a whole heap of benefits - from giving that first jolt in the morning to keeping high concentration and perky vibe throughout the day.
Coffee may be the most popular, but it can also come from caffeine mints and pills, chocolate (beverage and milk bars alike), cake, yogurt, and tea!
Yes - tea. That seemingly innocuous cup of tea can give you that much-needed boost.
It’s such a healthy, delicious drink and there are many ways to drink it. But just the same, tea can give you your daily caffeine fix without the jitters.
Let’s cut to the chase.
Like any other tea, green tea can be a good source of caffeine.
The level of caffeine may not be as high as that found in a tall cup of coffee. But it’s enough to get you out of your morning or afternoon slump.
Both coffee and tea can give you the caffeine fix that you need, but one eases into your system and the other hits you like a truck.
On average, a tall cup of coffee (8-oz serving) usually contains 100 mg to as much as 400 mg of caffeine, while a cup of green tea of the same size is anywhere between 30 and 50 mg. 
Related article: How much caffeine is in your favorite brand of coffee?
To give you an idea, here’s a table showing the various brands of green tea.
After consuming green tea, this is exactly what happens to you:
The benefits of green tea go on, even before hitting the hay. Let me count the ways:
If you’d like to know more about the benefits of green tea and how you should make it, here’s Dr. Mike telling us more!
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Is there a big difference between synthetic and natural caffeine? Which gives a stronger jolt? Does it even matter?
Natural caffeine in coffee, tea, and chocolate is much less common than the synthetic caffeine found in so many other products.
Caffeine is found in plant species such as the more popular ones like Coffea arabica and Coffea robusta, as well as tea leaves, kola nuts, cacao beans, Yerba mate and guarana berries.
Not only does naturally-occurring caffeine from said plants keep your cognitive functions at their peak, but it also contains antioxidants that help you fight illnesses like cancer and Alzheimer’s.
When people think of caffeine, they often think of the coffee beverage or coffee beans, which today are indeed the biggest source of the stimulating chemical in the world. But several popular plants worldwide – around 60 species of them – contain caffeine that have been made into delicious food and drinks from antiquity.
Many of the plants below not only contain caffeine but also are good sources of theophylline and theobromine, two other mild stimulants that scientists believe have some beneficial effects. (Theo means “god” in Latin.)
Caffeine keeps you alert, enhances concentration, and alleviates fatigue— so it would only be good to drink copious volumes of caffeinated beverages before an exam in school, right?
Maybe, maybe not.
In this article, we’ll find out what to do pre-exams, caffeine-wise.