Today I went to two hours of martial arts, with my buddy The Hulk in attendance also. Hulk is in his late 50s, and is incredibly strong. His knees are going, that's really his only limitation. He and I both got hurt within seconds of each other at the black belt test--he broke a couple of ribs and popped them off his sternum, and I got my ACL wrecked.
The first hour was core class, a great cardio workout. The second was grappling. We focused on the triangle choke, something I want to improve because, with my long legs, it should be an important move for me. We also worked on posturing up to get out of the triangle choke.