Comment by frankenstain

> The most devastating fact of life is that physical (and mental) performance drops off at around mid 30s

Different faculties peak at different times. While MIT/Harvard research shows that raw processing speed peaks early, it highlights that social intelligence and crystallized knowledge don't peak until our 40s or 50s [I]. Specifically, the Whitehall II study identifies age 45 as the inflection point for initial reasoning decline [II], while research from Stony Brook found that changes in brain network stability—the metabolic cost of cognitive maintenance—typically don't begin until age 44 [III].

[I] https://journals.sagepub.com/doi/abs/10.1177/095679761456733...

[II] https://www.bmj.com/content/344/bmj.d7622

[III] https://www.pnas.org/doi/10.1073/pnas.2416433122