Jujitsu last night had me leading the blue belt kids in a rear leg sweep that judo calls osoto gari. It's a very hard fall, so I told them to be sure to relax into it and tuck their chins on their chests. We teach this as a counter-attack from a roundhouse punch. You do an outer block, grab the arm and the shoulder and then step in behind them and take out their leg with something like a back kick, except the point of contact is hamstring to hamstring rather than foot to hamstring. They were having a hard time not bouncing their foot off the mat which cuts the effectiveness in half.
Leading the warmups in the adult class I mentioned that some of them were toppling like redwoods doing the front falls instead of letting their knees bend and moving laterally forward. This prompted some questions about how the hands are supposed to hit the mat from a purple belt and how the knees are kept off the mat by a blue belt. Pretty surprising that they needed some correction on this but better that than they should get hurt. I was being used as crash dummy for demonstrating basic escape techniques with some variations. Normally we teach these to white belts with a step in toward the person grabbing them to increase the leverage and a wrist turn into an elbow pry/strike to effect a release. Followed up by a back fist or elbow strike. In the variations he demonstrated last night the lead in was with a strike. I got tagged in the balls several times. Not too hard but enough to be unpleasant. This of course always makes for lots of groans of sympathy and a few snickers of amusement. One of the other techniques he used me to show was a foward roll to escape from an arm bar. Given the precarious state of my right delt, I was a little slow in the execution just to be on the safe side.
I did a GXP this morning on the cross country ski elliptical followed by some delt rehab and foam rolling and stretches.