• The human brain has about 100,000,000,000 (100 billion) neurons.
• From all the oxygen that a human breathes, twenty percent goes to the brain.
• People who ride on roller coasters have a higher chance of having a blood clot in the brain.
• Once a human reaches the age of 35, he/she will start losing approximately 7,000 brain cells a day. The cells will never be replaced.
• It is not possible to tickle yourself. The cerebellum, a part of the brain, warns the rest of the brain that you are about to tickle yourself. Since your brain knows this, it ignores the resulting sensation.