Re: does nikyo hurt?
I want to put a big asterix next to all my recent posts. Today we had some free time after practice, so I revisited nikajo with Crampton-sensei and the other kenshusei. I think maybe what I've been doing is effective from training with the same people over and over. Crampton-sensei showed how what I'm doing is dependant on uke not escaping with flaccidity. Of course, by actually focusing on the wrist, you can keep uke from escaping with flaccidity. It's hard for me to assess because--as I intimated before--I think the technique relies on maai and using the knees and back correctly rather than the hands, and today my knees, hips, and lower back were having a rough time.
Anyhow, when the Kenshusei course is over in a few weeks, I will make a long post trying to explain how to do the painless variant as I understand it. Right now, I am think Mert's comments make a lot of sense, however.