What is the most important aspect of achieving optimum fitness? ADVERTISEMENT 1.16K viewsFebruary 5, 2012 0 billie February 5, 2012 0 Comments What is the first area, from the holistic view, that you have to address to achieve this. 14 Answers ActiveVotedNewestOldest 0 Danielle0 Posted 0 Comments If physical fitness is defined as optimal measures of muscular strength, muscular endurance, body fat, flexibility and cardiovasular ability, then, the most important aspect of achieving fitness is balance of all five components. You are viewing 1 out of 14 answers, click here to view all answers. Register or Login