Mark's father remarried and raised them strictly, seeking to influence them to become leaders. Throughout his childhood and teenage years, Mark's father would have him combine athletic and mental training. Mark would have to dribble a basketball without looking at it while reciting multiplication tables; practice baseball swings in a batting cage while answering questions about the periodic table and similar combined drills that his father hoped would develop quick thinking and self-confidence that would guide Mark in all areas of life and not simply sports.