Coffee is one of the most popular drinks around the world and there are many advantages to drinking coffee. Coffee help increasing your metabolic rate by as much as 30%. It can increase mood and a feeling of well-being, increase fat-burning and muscle fatigue. It helps keep the brain alert and receptive to new information and helps retain information more efficiently. When we consume too much coffee, we can become addicted to it. It can overstimulate the brain and drain the adrenal glands, causing chronic fatigue. This can lead to irritability, impatience and depression. Coffee can adversely affect blood sugar regulation. Coffee is also very acidic and if too much is consumed, it can cause stomach and intestinal irritation and discomfort. So the bottom line is, moderate consumption of coffee, such as one or two cups a day is perfectly healthy unless you have an aversion to any caffeine.