The left side of the brain controls the righ side of the body, so when the left brain is stronger, the right hand will be strong and the person may be right-handed. the left half controls speaking,so a person with a strong left brain may become a good speaker, professor,lawyer, or salesperson. A person with a strong left brain may have a strong idea of time and will probably be punctual. the person may be strong in amath and logic and may like to plan things ahead.