Normally I don't have much of a problem with all this, despite the trickiness involved. But today the alarm bells rang for me. As I sat into the position I realised my right leg was going into a spasm of cramp and there wasn't anything I could do to avoid it. If this happens, as it has done once or twice when I've been praying at home, I just stretch the leg out a bit and this eases the problem. But that was not an option today.
The odd thing was that I got through the minor crisis more easily than I dared imagine at the onset of the pain. I suppose it was a case of just accepting the pain since there was no other option. But once accepted it became instantly controllable, though the relief I experienced when the prayer concluded was significant, to say the least.
In future I'll just have to remember that this old body of mine isn't what it used to be - not that it has ever been all that much, sad to say.