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- Caffeine - Wikipedia
The most common sources of caffeine for human consumption are the tea leaves of the Camellia sinensis plant and the coffee bean, the seed of the Coffea plant Some people drink beverages containing caffeine to relieve or prevent drowsiness and to improve cognitive performance
- Caffeine: What It Is, Benefits and Side Effects
What is caffeine? Caffeine is a type of drug called a stimulant, meaning it increases chemicals in your brain called neurotransmitters
- Caffeine - Zhorn Software
If you have problems with your PC locking or going to sleep, caffeine will keep it awake It works by simulating a keypress once every 59 seconds, so your machine thinks you're still working at the keyboard, so won't lock the screen or activate the screensaver
- Caffeine: How much is too much? - Mayo Clinic
Up to 400 milligrams (mg) of caffeine a day seems safe for most adults That's about the amount of caffeine in four cups of brewed coffee, 10 cans of cola or two "energy shot" drinks Keep in mind that the caffeine content in drinks varies widely
- Caffeine - Uses, Side Effects, and More - WebMD
Caffeine is a natural chemical with stimulant effects It is found in coffee, tea, cola, cocoa, guarana, yerba mate, and over 60 other products Caffeine works by stimulating the central
- What Is Caffeine, and Is It Good or Bad for Health?
Caffeine is a natural stimulant consumed throughout the world This article reviews caffeine and its health effects, both good and bad
- Caffeine - The Nutrition Source
Although we tend to associate caffeine most often with coffee or tea, the research below focuses mainly on the health effects of caffeine itself Visit our features on coffee, tea, and energy drinks for more health information related to those beverages
- What Happens to Your Brain When You Drink Caffeine Every Day
Learn how caffeine affects brain chemicals and health, sleep, and mood Understand safe daily limits, hidden sources, and signs you’re getting too much
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