[mplewis]

No? What makes you think that lean is the optimal body state for all individuals?

[voisin]

High body fat is correlated with all sorts of negative health outcomes, no?

[n4r9]

That doesn't necessarily imply that super low body fat is optimal.

[voisin]

I think we are speaking past each other due to definitions. I wouldn’t think “lean” is the same as “super low body fat”. I assumed the lean we were talking about was maybe 10-13%. Whereas super low would likely be in the sub-8%.

[n4r9]

Maybe, but 13% is still well under what I would suspect is the bar for being correlated with negative health outcomes. Most sources seem to suggest that 18-20% is still a healthy level.