Hi, I have recently started Judo. My sister is learning Hontai Yoshin Ryu Jujitsu and I was thinking of starting that aswell. I was wondering, would this complicate my judo training? Does anybody else train judo and japanese jujitsu? I am interested if they would complicate each other or hinder each other. Thanks.

I have zero formal training in koryu jujutsu, but based on my experience with the USJA Japanese Jujitsu program and Aikido you'll likely find this jujitsu school to be a totally different beast than Judo at the beginner level. Judo will certainly give you a head start on the jujitsu school's throwing techniques when you reach that point. Its likely that beginner stuff in the jujitsu school will revolve around grip breaking and drills to teach movements and concepts you'll use in later techniques. Judo will have you working on a throw or two on day one, at least once you've began learning to fall. You also may find some minor differences between falling techniques in the two arts, and of course each sensei will want it done his way at his dojo. Or maybe even things like how you bow or kneel when going to the ground.

Everything you learn in one art will certainly improve your understanding of the other, but initially your progress may be slowed while you learn to deal with these small differences.

The biggest problem you're likely to run into is wear and tear on your body from training 4+ days a week. I'm currently doing 3 Judo and 3 Aikido sessions per week and 1 boxing night. Its taking a toll since there is less time for little stuff like jammed joints to sort themselves out, pulled muscles to heal, and you're much more likely to develop tendinitis. Get a few more ice trays, a big bottle of advil, and plenty of sports tape if you're wanting to train 4-5 days per week!

Some guys at the one club I train with also train in Dan zan ryu Jiu-jitsu. in fact, they all had DZR experience before starting Judo and it really helped them out a lot. they already knew all the throws, chokes, all they had to do was learn the rules and get used to competing.

I would echo golsa's comments. As golsa points out, an issue might occur if the training details that you get in both classes are different. For example, if the judo class teaches you to do shoulder throw one way and the jiu-jitsu class another, you'll probably have trouble switching back and forth in the beginning. If both classes are being offered in the same dojo, then probably something has been done to iron out these differences. If at different dojos you may have the problem. It can be handled but don't make the mistake of telling one sensei the other sensei does it different (especially don't say "does it better" (even if true )).

This battle was already fought and JuJutsu lost. Judo is far safer and readily available. Plus the fact always remains that you can study the movements of the Randori no Kata, Kime no Kata, and Kodokan Goshin Jutsu and you will have all the JuJutsu you will ever need.

Don't limit your Judo to just Shiai and Randori.

Train Hard, Stay Safe,
Good Luck

Is it this http://www.hontaiyoshinryu.com? If so it sounds like kobudo which will not help much in judo.

I agree the first answer!

judomindtricks: one thing that I can guarantee is that you will have a much different perspective by training both. They should compliment each other and make you a better martial artist as long as you have instructors who are open minded about you training with a different art. Good luck.