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2. Should You Drink Caffeine Before A Workout? Experts ... - AOL

   www.aol.com/lifestyle/drink-caffeine-workout...

   For some, drinking a high-caffeine beverage might make them feel anxious, could make their heart race, cause gastrointestinal issues, or raise blood pressure, says Stephens. These are especially ...

3. Caffeinated drink - Wikipedia

   en.wikipedia.org/wiki/Caffeinated_drink

   Tea (left) and coffee, the two most common naturally caffeinated drinks. A caffeinated drink, or caffeinated beverage, is a drink that contains caffeine, a stimulant that is legal practically all over the world. Some are naturally caffeinated while others have caffeine added as an ingredient.

4. Heart Disease: Does Too Much Caffeine Cause High Blood ... - AOL

   www.aol.com/heart-disease-does-too-much...

   Researchers say consuming more than 400 milligrams of caffeine per day could raise the risk of cardiovascular disease. Excessive caffeine from coffee, tea, energy drinks, and other beverages may ...

5. I Drank Green Tea Instead of Coffee for 30 Days ... - AOL

   www.aol.com/drank-green-tea-instead-coffee...

   According to the U.S. Food & Drug Administration, one eight-ounce cup of green tea contains around 30 to 50 milligrams of caffeine, compared to 80 to 100 milligrams in an eight-ounce cup of coffee ...

6. Caffeine - Wikipedia

   en.wikipedia.org/wiki/Caffeine

   Caffeine-containing drinks, such as coffee, tea, and cola, are consumed globally in high volumes. In 2020, almost 10 million tonnes of coffee beans were consumed globally. [ 19 ] Caffeine is the world's most widely consumed psychoactive drug .

7. Tea - Wikipedia

   en.wikipedia.org/wiki/Tea

   A study found that the caffeine content of one gram of black tea ranged from 22 to 28 mg, while the caffeine content of one gram of green tea ranged from 11 to 20 mg, reflecting a significant difference. [58] Tea contains small amounts of theobromine and theophylline, which are xanthines and stimulants, similar to caffeine. [59]