Tried to do the Raymond Chandler way of practicing which is you don't hav to play, you just can't do anything else. It almost worked. I was completely beat just 10 minutes shy of the 2 hour mark, so I stopped. And of course, considered doing other harp-related things as fulfilling that goal anyway. But it's not.

I played a lot of different things, because of lack of concentration, however I feel I gained muscle.

And now, holy crap, must nap.