I totally disagree that martial arts oppose psychedelics. In fact, I had psychedelic trips tell me for years about something missing in my life, which I found out it was martial arts. Since then, the message dissapeared and I am now able to go deeper than ever in my trips. Training jiu jitsu has only helped me as a person, and gives me a hugely important grounding.
BJJ is an incredible tool that in many ways is very similar to psychedelics. I experience something like ego death regularly, because it kills my ego, shows me at what exact stage of my development I am all the time. One cannot lie to himself when training. How can I think highly of myself and pretend I am something which Im not, if I get regularly choked out or my limbs hyperextended by someone way smaller than me? I get the immediate feedback from reality and get humbled myself, put my ego in check. At the same time, it also shows me how I am getting slowly better through my own efforts, so it's a great realistic motivating factor to keep improving.
And if we think in terms of body, being a temple and all of that, it is so important to be healthy and fit, to put the body under controlled stress so that it can recover and become stronger. We are not made to sit all day long, our muscles start atrophying, and so many core muscles we almost don't use in normal daily life, and neither in normal weight lifting (unless you do functional strenght exercises/ use kettle bells etc). And then there is the stress factor that is being aleviated. It's incredible how much stress this releases. So many men, specially, have all this agression in them, and they try to prove to others how they are better in all sorts of silly external ways, are unconsciously competing with others. But if you are getting yourself on the mats regularly, you don't have anything else to prove in the streets, you already got rid of that stress and genetic predisposition for competition, you already released it and don't have to express it elsewhere.
Not to mention the medidative factor, when I am training, I am completely in the moment, there is nothing else in my mind, really 0 else. It's just not possible to think, because if you do, you'll get choked out in a second.
I've never trained tae kwon do though. I train brazilian jiu jitsu. The word jiu jitsu translates as the 'gentle art'. There are no blows to the head, you're trying to control another person with technique, without causing any damage to them, or rather, in a controlled form slowly tightening a choke or cranking a joint lock to show them you could damage them if they don't tap out. Maybe getting severe blows to the head in other types of martial arts might have other disadvantages, but I can't talk about that from experience.
[YOUTUBE]
[YOUTUBE]
and last one.. Notice how what these high level practitioners say is so similar to what some psychedelic-oriented person might say about their attitude towards things and what is important in this life:
[YOUTUBE]
PS: I once trained on acid, it was great! I could more easily feel what my oponents wanted to do
