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

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

   Caffeine does have benefits when it comes to getting active whether you’re running a race or lifting weights. It can delay the feeling of fatigue, make workouts feel easier, improves alertness ...

3. What does pre-workout do and is it really effective? Know the ...

   www.aol.com/lifestyle/does-pre-workout-really...

   Pre-workout may contain vitamins, creatine and caffeine. Is it worth trying?

4. Health Drink Showdown: Matcha vs Coffee - AOL

   www.aol.com/health-drink-showdown-matcha-vs...

   Coffee vs. Matcha: Side Effects. While moderate caffeine intake can be beneficial, drinking more than 400 milligrams of caffeine a day can mess with your stress levels by increasing cortisol (aka ...

5. Pre-workout - Wikipedia

   en.wikipedia.org/wiki/Pre-workout

   Ephedrine (usually as Ephedra extract) was a common ingredient in many pre-workout supplements in the 1990s and early 2000s, sometimes in combination with caffeine and aspirin (the so-called ECA stack), however, following many reports of serious side effects and some deaths, it was banned for use in supplements by the FDA in 2004 throughout the ...

6. Caffeine use for sport - Wikipedia

   en.wikipedia.org/wiki/Caffeine_use_for_sport

   The benefits caffeine provides influences the performance of both endurance athletes and anaerobic athletes. Caffeine has been proven to be effective in enhancing performance. Caffeine is a stimulant drug. [1] Once consumed, it is absorbed in the stomach and small intestine as well as being circulated throughout the body. [2]

7. 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 ...

8. Health effects of coffee - Wikipedia

   en.wikipedia.org/wiki/Health_effects_of_coffee

   The health effects of coffee include various possible health benefits and health risks. [ 1 ] A 2017 umbrella review of meta-analyses found that drinking coffee is generally safe within usual levels of intake and is more likely to improve health outcomes than to cause harm at doses of 3 or 4 cups of coffee daily.

9. Caffeine dependence - Wikipedia

   en.wikipedia.org/wiki/Caffeine_dependence

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