Not the person you replied to, but I know well a person who * does zero exercise, other than a few short walks every workday * has done very little exercise at

Not the person you replied to, but I know well a person who * does zero exercise, other than a few short walks every workday * has done very little exercise at any time in the last 20+ years * is as sedentary as life allows him to be * can do 10 pullups no problem * has a "normal" BMI Is that fit? Who knows, I certainly don't. Also maybe he's not very healthy despite some favourable metrics, I dunno. Could be a lot worse, though. My point here was only to substantiate that exercise and fitness are not perfectly correlated, and thus support vladharbuz's top-level comment.