Common Myth #3: Humans use only 10 percent of their brains.

The Myth: 

Humans use only 10 percent of their brains.

The Truth:

Although we might not use 100% of our brains 100% of the time, we do use 100% of our brains over the course of the day.  Part of our brain may be used for reading, for exercise, for conversation, etc., but we may not be using the whole brain all the time.