The Ultimate Guide to Understanding Caffeine

Caffeine is the world's most widely consumed psychoactive substance. But how much do you really know about it?

What is Caffeine?

Caffeine is a natural stimulant found in coffee beans, tea leaves, cacao pods, and other plants. It acts on the central nervous system to increase alertness and reduce fatigue.

How Does it Work?

It primarily works by blocking adenosine receptors in the brain. Adenosine promotes sleepiness, so blocking it makes you feel more awake.

Sources of Caffeine

• Coffee
• Tea (Black, Green, White)
• Soft Drinks (Colas)
• Energy Drinks
• Chocolate
• Some Medications

Effects on the Body

Besides alertness, caffeine can increase heart rate, blood pressure, and stomach acid production. Effects vary based on individual tolerance, dosage, and frequency of use.

This guide provides a comprehensive overview. Explore different beverage types on our site to see specific caffeine amounts.