skribs
Grandmaster
I think the general consensus in the martial arts community is that cross-training is generally beneficial to having a more well-rounded set of martial arts skills. While maybe not necessary for a boxer to become a better boxer, it can help a boxer become an MMA fighter, or an MMA fighter fill out a skillset they don't already have.
For example, let's say John trained Muay Thai for 2 years. John might want to look to boxing to improve his punches, or Taekwondo to improve his kicks. John realize that they have different rules, which place specific limitations on the sparring that result in slightly different technique and application. But John also realizes that a boxer with 2 years of experience has probably thrown 10x the punches he has, or a Taekwondoist has probably thrown 5x the kicks, and so he can hyper-focus on that aspect of his training. Or, John might decide to train in Judo to take the next step from the clinch, or in BJJ to have some sense of what to do in the event he is taken down.
I believe this is the general opinion of people who promote cross-training. That you should cross-train to fill a gap in your technique, or to get a different version of a technique (i.e. Muay Thai kick vs. Taekwondo kick) so you can have more tools at your disposal to use at the right time, because there are times when the typical kick of each style is going to be the more correct call.
However, what I feel is often missing, is how cross-training can help you with perspective, mindset, and training methods.
Up until now, most of my experience in martial arts has been in the form of Taekwondo and Hapkido. I have recently switched to BJJ. There are two very clear things that have come out of this transition:
I'll give a few examples of what I mean.
In BJJ, class typically involves a couple of moves-of-the-day, and a lot of sparring. You get your belt when the professor feels you've earned it. In Taekwondo, class typically involves a fairly rigid adherence to a curriculum of specific combinations and drills, which you will be tested on, which is when you get your next belt. It's largely about "have you memorized XYZ and gotten them up to a certain standard", which is something much more objective.
Personally, I wish that my TKD Master would have transitioned into more of a move-of-the-day at the advanced belts, or at least at black belt. It's a sentiment I've heard shared by many of the older black belts, that they want a deeper dive instead of just more stuff to learn. Similarly, I do wish that there were specific techniques we would consistently drill in the beginner class of BJJ. My experience has helped shaped how I plan to run my own classes in the future, where instead of just doing things the TKD way or the BJJ way, I want to transition from one to the other. And this has nothing to do with the techniques themselves, but rather the training methodology.
Another is the difference between how an art like Hapkido approaches self-defense, compared to something like BJJ. Or Krav Maga vs. MMA, or any sort of situation-based SD system vs. a sport-based one. A Hapkido instructor will get you to think about how quickly you can gain control of a situation. A BJJ instructor will get you to think about how reliably you can.
A HKD class will typically ask more high-level questions*, such as "What if there's a second person?" In a sport setting, this question is utterly irrelevant. In online discussions I've had with sport-only folks, they tend to assume that irrelevancy is universal, because if you can't train it for sport, you can't train it. But I feel these are valid questions to ask. I respect those who say "It's not something we teach here" and those who use a sport-minded approach to tackle these questions, but I don't like the common response that if your school includes something not applicable to MMA, then it's bad martial arts.
On the other hand, a BJJ class will typically ask questions that are more in-the-weeds. "What if my opponent has tight grip on my arm while I try to grab their leg?" The professor may then prove that it doesn't matter, show how to modify the technique, suggest another technique, or simply say that this wouldn't work if our opponent has that grip and we'd use another technique later. In the previous paragraph, I mentioned that the HKD question is sort of taboo in BJJ. The same applies here. These types of in-the-weeds questions were not really relevant to HKD. The idea behind HKD was to surprise your opponent by your initial response to their attack, and to maintain control through the entire technique sequence. If your opponent has time to respond, you've already failed.
*Note that when I say "high-level", I mean so in terms of how far zoomed in or out on the technique we are, and not in regards to how well the execution is.
I feel that a HKD guy who cross-trains in BJJ doesn't just learn the techniques of BJJ, but they learn the mindset to troubleshoot mid-fight. I feel that a BJJ guy who cross-trains in HKD would be exposed to new possible scenarios, and alternatives to fighting.
For example, let's say John trained Muay Thai for 2 years. John might want to look to boxing to improve his punches, or Taekwondo to improve his kicks. John realize that they have different rules, which place specific limitations on the sparring that result in slightly different technique and application. But John also realizes that a boxer with 2 years of experience has probably thrown 10x the punches he has, or a Taekwondoist has probably thrown 5x the kicks, and so he can hyper-focus on that aspect of his training. Or, John might decide to train in Judo to take the next step from the clinch, or in BJJ to have some sense of what to do in the event he is taken down.
I believe this is the general opinion of people who promote cross-training. That you should cross-train to fill a gap in your technique, or to get a different version of a technique (i.e. Muay Thai kick vs. Taekwondo kick) so you can have more tools at your disposal to use at the right time, because there are times when the typical kick of each style is going to be the more correct call.
However, what I feel is often missing, is how cross-training can help you with perspective, mindset, and training methods.
Up until now, most of my experience in martial arts has been in the form of Taekwondo and Hapkido. I have recently switched to BJJ. There are two very clear things that have come out of this transition:
- A respect and understanding for the BJJ training methodology, now that I have experienced at least a sliver of it.
- An increased respect and confidence in in my TKD and HKD training, now that I have experienced other styles.
I'll give a few examples of what I mean.
In BJJ, class typically involves a couple of moves-of-the-day, and a lot of sparring. You get your belt when the professor feels you've earned it. In Taekwondo, class typically involves a fairly rigid adherence to a curriculum of specific combinations and drills, which you will be tested on, which is when you get your next belt. It's largely about "have you memorized XYZ and gotten them up to a certain standard", which is something much more objective.
Personally, I wish that my TKD Master would have transitioned into more of a move-of-the-day at the advanced belts, or at least at black belt. It's a sentiment I've heard shared by many of the older black belts, that they want a deeper dive instead of just more stuff to learn. Similarly, I do wish that there were specific techniques we would consistently drill in the beginner class of BJJ. My experience has helped shaped how I plan to run my own classes in the future, where instead of just doing things the TKD way or the BJJ way, I want to transition from one to the other. And this has nothing to do with the techniques themselves, but rather the training methodology.
Another is the difference between how an art like Hapkido approaches self-defense, compared to something like BJJ. Or Krav Maga vs. MMA, or any sort of situation-based SD system vs. a sport-based one. A Hapkido instructor will get you to think about how quickly you can gain control of a situation. A BJJ instructor will get you to think about how reliably you can.
A HKD class will typically ask more high-level questions*, such as "What if there's a second person?" In a sport setting, this question is utterly irrelevant. In online discussions I've had with sport-only folks, they tend to assume that irrelevancy is universal, because if you can't train it for sport, you can't train it. But I feel these are valid questions to ask. I respect those who say "It's not something we teach here" and those who use a sport-minded approach to tackle these questions, but I don't like the common response that if your school includes something not applicable to MMA, then it's bad martial arts.
On the other hand, a BJJ class will typically ask questions that are more in-the-weeds. "What if my opponent has tight grip on my arm while I try to grab their leg?" The professor may then prove that it doesn't matter, show how to modify the technique, suggest another technique, or simply say that this wouldn't work if our opponent has that grip and we'd use another technique later. In the previous paragraph, I mentioned that the HKD question is sort of taboo in BJJ. The same applies here. These types of in-the-weeds questions were not really relevant to HKD. The idea behind HKD was to surprise your opponent by your initial response to their attack, and to maintain control through the entire technique sequence. If your opponent has time to respond, you've already failed.
*Note that when I say "high-level", I mean so in terms of how far zoomed in or out on the technique we are, and not in regards to how well the execution is.
I feel that a HKD guy who cross-trains in BJJ doesn't just learn the techniques of BJJ, but they learn the mindset to troubleshoot mid-fight. I feel that a BJJ guy who cross-trains in HKD would be exposed to new possible scenarios, and alternatives to fighting.