Day 55 for me is Core Synergistics.
The workout goes better than Tuesday, and I up my weights to 8 pounders for most. I can get down in Chataronga for the Iso's, but can't hold it the full 10 seconds without dropping my knees. Still can't do the run in Chataronga, so just run the full minute in Plank.
My husband happened to be home and in the general vicinity while I did the workout (he is usually not home when I work out.) His comment after the Prison Pushups? "Wow, your a badass!! That is hard core!" hehe LOVE IT!