On ChrisHallquist's post extolling the virtues of money, the top comment is Eliezer pointing out the lack of concrete examples. Can anyone think of any? This is not just hypothetical: if I think your suggestion is good, I will try it (and report back on how it went)
I care about health, improving personal skills (particularly: programming, writing, people skills), gaining respect (particularly at work), and entertainment (these days: primarily books and computer games). If you think I should care about something else, feel free to suggest it.
I am early-twenties programmer living in San Francisco. In the interest of getting advice useful to more than one person, I'll omit further personal details.
Budget: $50/day
If your idea requires significant ongoing time commitment, that is a major negative.
Given that the whole thread is about ways a rationalist can spend money to improve his life, if archery isn't a good use of your time buying a bow probably isn't good use of your money either.
To the extend that I have used strong words to dismiss archery as suboptimal it's because I dislike the idea of people recommending activities like archery, sailing or go-kart racing without any thought about secondary benefits.
I do think it makes sense to think seriously how about one spends his time. I think I get around 8 separate benefits from dancing.
Fun
Physical Confidence with women. It both provides heavy reaction therapy and an enviroment where it's socially expected that the men leads the woman.
Physical exercise that improves body coordination. I think that leads to more expressiveness in my body language in tasks such as public speaking.
It's a general sport and fits the recommendation that one should do sport to be healthy.
It trains sensitivity of perception what happens physically inside other people.
Practical understand about human physiology that I can't get from a physiology testbook. A limit space to experiment and check theories.
I'm in an enviroment with woman that are potential romantic partners.
I learn to listen to music on a deeper level (but compared to the other points that's not really useful in other stuff I do)
That doesn't mean that I think everyone should take up Salsa. I don't even argue that it's the perfect dance but I do think I have much better reasons for it than were provided here for taking up archery.
I don't care for the semantics.
Even if it does grow some muscles, it doesn't grow them symmetrically. Good muscle training should train both sides evenly. Having uneven muscles distribution isn't good.