 But, it was not all academics for Marcos for he knew too well the value of physical fitness.Not only did he have a passion for boxing, wrestling and shooting- he also had the expertise, teaching his two sons the "scientific" method of boxing and insisting on them to always settle sibling rivalries through wrestling.He taught them boxing and shooting so well that his sons used to out-box opponents in local children's boxing derbies; his second son Pacifico eventually became an expert pistol shooter like himself, while his eldest son Ferdinand became national rifle champion at the age of sixteen.