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  2. Caffeine - Wikipedia

    en.wikipedia.org/wiki/Caffeine

    Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class and is the most commonly consumed psychoactive substance globally. [9] [10] It is mainly used for its eugeroic (wakefulness promoting), ergogenic (physical performance-enhancing), or nootropic (cognitive-enhancing) properties.

  3. Caffeine Can Disrupt Sleep Even 12 Hours After You've ... - AOL

    www.aol.com/lifestyle/caffeine-disrupt-sleep...

    The study, which enlisted 23 men with a "moderate habitual caffeine intake" (under 300 mg) between the ages of 18 and 40, discovered that while a 100 mg dose of caffeine can be consumed up to four ...

  4. Caffeinated drink - Wikipedia

    en.wikipedia.org/wiki/Caffeinated_drink

    Caffeine can cause a physical dependence, if consumed in excessive amounts. [3] The need for caffeine can be identified when individuals feel headaches, fatigue and muscle pain 24 hours after their last energy drink. [4] Some commercially distributed drinks contain guarana, a South American berry with a caffeine content about twice that of ...

  5. This Type of Coffee Is the Worst for Heart Health, According ...

    www.aol.com/type-coffee-worst-heart-health...

    Dr. Setareh says that the combination of sugar and caffeine in coffee drinks can be especially harmful. “Combining sugar with caffeine can create a stress response, spiking blood pressure and ...

  6. Caffeine dependence - Wikipedia

    en.wikipedia.org/wiki/Caffeine_dependence

    Caffeine dependence can cause a host of physiological effects if caffeine consumption is not maintained. Commonly known caffeine withdrawal symptoms include headaches, fatigue, loss of focus, lack of motivation, mood swings, nausea, insomnia, dizziness, cardiac issues, hypertension, anxiety, and backache and joint pain; these can range in severity from mild to severe. [18]

  7. How Caffeine Helps Hair Grow Faster, According to Experts - AOL

    www.aol.com/lifestyle/caffeine-helps-hair-grow...

    How to use caffeine for hair growth. Caffeine can be found in many shampoos, scalp serums, and oils geared toward hair growth. And though caffeine may help support hair growth on its own, it can ...

  8. Coffea - Wikipedia

    en.wikipedia.org/wiki/Coffea

    Caffeine has also evolved independently in the more distantly related genera Theobroma and Camellia . [13] This suggests that caffeine production is an adaptive trait in coffee and plant evolution. The fruit and leaves also contain caffeine, and can be used to make coffee cherry tea and coffee-leaf tea. The fruit is also used in many brands of ...

  9. Caffeine (data page) - Wikipedia

    en.wikipedia.org/wiki/Caffeine_(data_page)

    Caffeine Properties Chemical formula. C 8 H 10 N 4 O 2: Molar mass: 194.194 g·mol −1 Appearance Odorless, white needles or powder Density: 1.23 g/cm 3, solid [1 ...