Today I redid core-workout A, but rather than doing it for time I went through it more slowly focusing on form.
I still can't bend 90º at the hips without hunching my back, so on the back extension I bent as far as I can without my back rounding. Further than before.
I got a lot deeper on the roll outs, far more challenge.
Leg raises are getting easier, very little bend at the knees.
For the obliique crunches I got more of a pike in.
For the side planks I added a further reach back, and a pike, rather than reaching just under my body. This was tough and my total reps went down to 8 each side.
The V-sit like the leg raise is a lot easier than before