Date: 13 Nov 2009 Comments: 0

Coffee contains the stimulant caffeine. This is dead caffeine, unlike bio-active caffeine found in green tea, black tea, yerba mat, guarana, and kola nut. Caffeine is a central nervous system stimulant that is followed by a depressed phase resulting in exhaustion, nervousness, irritability, fatigue, and often headache. Caffeine constricts blood vessels of the brain and causes decreased flow of blood which cuts the oxygen supply to the brain, resulting in gradual brain damage. It also increases your heartbeat 15% and makes your lungs work 13 times harder than normal. It greatly plays a role in fatigue as well. Herbal coffee tastes good and is easy to get.