Follow-up to: Boring Advice Repository
Many practical problems in instrumental rationality appear to be wide open. Two I've been annoyed by recently are "what should I eat?" and "how should I exercise?" However, some appear to be more or less solved. For example, various mnemonic techniques like memory palaces, along with spaced repetition, seem to more or less solve the problem of memorization.
I would like people to use this thread to post other examples of solved problems in instrumental rationality. I'm pretty sure you all collectively know good examples; there's a comment I can't find from a user who said something like "taking a flattering photograph of yourself is a solved problem," and it's likely that there are other useful examples like this that aren't common knowledge. Err on the side of posting solutions which may not be universal but are still likely to be helpful to many people.
(This thread is allowed to not be boring! Go wild!)
And how much endurance you want? And how much speed you want? And how much coordination you want? And how much sense of balance you want? Why single out strength? Feeling my speed improve feels better than strength improvements... I think strength is a dangerously good sounding word, it has way too positive connotations than utility. Of course, I am not advocating weakness, I am advocating that for people not interested in sports beach-muscles may work better, and for people interested in sports whatever amount, form, and methods of acquiring strength their trainer tells them is probably best.
You spoke of strength, and that is what I was responding to. All those other things are also important. The body you get if you do not attend to maintaining them is unlikely to be optimal, outside of a career that forces you to. Not being a professional athlete, dancer, or soldier, I must take care of the matter myself.