The Brain can truly be considered as the most complicated organ in the universe. There is nothing as complex as the human brain. It is estimated that we have 86 billion nerve cells. Each nerve cell is connected to other nerve cells, not in a one to one connection, but up to 10,000 individual connections between cells. Which means you have more connection in your skull than there are starts in the Universe. Information in your brain travels at about 268 miles an hour (Approximately 432 km/h). And even though your brain is only 2% of your body’s weight, it uses 20% to 30% of the calories that you consume.