The left of the brain controls the right parts of the body and right the left parts. Is there any specific reason for this nature?
Yes, because left handed people are the only ones in their right minds!!! Lol, lol!!!
The theory in the control of the body parts by the brain is determined by the Cerebrum. It is the largest part of the brain that controls the muscles and hence movement. This means that if the left side of Cerebrum is active, it means that the right side of the body is active too. Read more on http://www.braintumor.org/patients-family-friends/about-brain-tumors/brain-anatomy.html.
A grand design of balanceFound in all mammals