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!)
Super Slow is working pretty well for me, although I haven't been at it very long yet. The biggest advantage to it that I've seen is that it forces me to use more of my muscles - it helps me avoid cheating by using my strongest muscles to gain momentum to skip my weaker. It also helps me focus on the form of the exercise rather than the end state.
I don't know anything about Super Slow, but FWIW, these are all attributes of Starting Strength as well.