I've been doing brazilian jiu-jitsu for about 5 years, and would highly recommend it to anyone. I know a wide range of people who practice it, from professional fighters to little kids to a guy in his 60s.
I think it fits especially well for the HN crowd, because there's generally very little mystical bs that goes on, and although this analogy gets abused, it's basically human chess. There's a very analytical approach to learning jiu-jitsu as opposed to most striking arts (I also do muay thai and recommend that as well if the idea if touching people grosses you out) which are largely reflexive.
I think it fits especially well for the HN crowd, because there's generally very little mystical bs that goes on, and although this analogy gets abused, it's basically human chess. There's a very analytical approach to learning jiu-jitsu as opposed to most striking arts (I also do muay thai and recommend that as well if the idea if touching people grosses you out) which are largely reflexive.