But that is just not true, scientist have shown that we use both halves of our brains. “Now, scientists at the University of Utah have debunked the myth with an analysis of more than 1,000 brains. They found no evidence that people preferentially use their left or right brain. All of the study participants — and no doubt the scientists — were using their entire brain equally, throughout the course of the experiment” (Live science). These theories started because back then in many different cultures with different customs, left hand was considered the dirty hand. They would use their left hand to clean themselves when going to the