The effects of caffeine are many and varied. Within minutes of being ingested, the caffeine stimulates adrenal glands to release hormones which energise the central nervous system, and the brain's cortex - your intellectual center. Small wonder, that Coca-Cola (which contained caffeine) was first marketed as an "intellectual beverage" and "brain tonic".
Just 100 milligrams of caffeine, about the amount in a strong cup of coffee, has been found to substantially increase wakefulness and clarity of mind, as measured by test scores. Thoughts may come more easily for a while, decision time may be shortened, and some people find they can better focus their attention on a task. Finally, drinkers of tea, coffee, and cola can temporarily stave off fatigue.
Caffeine is addictive and withdrawal symptoms can be a painful experience: headaches, irritability, insomnia, light-headedness, nausea, stomach upsets and diarrhea. An early warning sign of caffeine abuse is a period of dizziness when a person first stands up after lying down. Other symptoms are more subjective: Insufficient energy in the morning even though you slept well, fatigue in the afternoon and diminished concentration.
Perhaps you would like to join me for coffee at the Cappuccino web site?
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