Very nice. Will check that out.I know Peter Attia counts this as a longevity test and has different levels of below/above/elite by age and gender, can’t remember what those are though.
Would think there has to be some sort of BW component though because it’s not fair to say that me holding up my body weight at an FFMI of 25 is the same as some giant near 30.
The equation above straight forward and I'm sure you could put some exponent on the body mass to account for human body size / allometry but as long as we are all just trying for more time then all good. I'll refrain from anymore complexity and try to make this fun for a change.