Whether you enjoy waking up to a fresh pot of coffee, washing your lunch down with a cola or relaxing at night with a cup of tea, these beverages have one thing in common. . This naturally occurring substance is found in the leaves, seeds and fruits of more than 60 plants. Even though it is one of the most widely studied ingredients, much controversy and misperception about caffeine continues to brew. Everything in moderation. Caffeine is a stimulant and can temporarily boost energy levels, fight fatigue, increase heart rate and elevate blood pressure by acting on the central nervous system.
People differ greatly in their sensitivity to caffeine.
Some can drink several cups of coffee, tea or cola and not feel any effects, while others feel the influence after only one serving. The key to caffeine, like most other foods, is moderation. Moderate caffeine consumption is considered to be about 300 mg a day. The amount varies among beverages. The range is due to different brewing methods, brand, plant variety, etc.