With respect, Doc please see https://www.npr.org/templates/story/story.php?storyId=106268439. You have every right to disagree, but this is one of those areas where enough research argues that we don’t use this particular measurement when we discuss fitness. Again, it’s up to you. As a writer who concentrates a lot on fitness, I do my level best to stay up with the research. As a dedicated gym pig (I am on my way there right now, as a matter of fact) I agree wholeheartedly with the rest. Just saying.