Vincentboucher and Jugga J,
I actually suggest to my music students the possibility that ambidexterity exercises whole-brain activity. The left side of the brain controls several right side body limbs and organs (right leg/foot, arm/hand, eye, etc.). The reverse is true also. When a person plays guitar or piano, they are learning a form of ambidexterity with both arms/hands. The same holds true for drums which also includes the use of both legs/feet.
Leonardo da Vinci was ambidextrious. He wrote his notes backwards with his left hand and read them with a mirror. He probably did this as a safety measure to keep his notes as secret as possible. However, I believe there was a definite link between his genius and his ambidexterity.
Mike
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