Hi the left side of your brain controls the right half of the body and vice versa . find out why ? also find out what makes some people left handed and some right handed

The brain has commisure on both sides of the brain, they cross opposite which creates chyamia. Chyamia causes movements from body movements on each side of the brain if you lose Chyamia you lose function over your movement. And why some people are right and left handed is due to the brain having two language hemispheres along language ability. The govern of language is located on the left side of the brain which tends to make people right handed while the right side tends to make you left handed. But, it is said that the brain might not be the reason you are left handed it might be from gene activity in the spinal cord when in the womb.

Hope this helps!