Workout Update: 645 Cardio/Lift 4 Day 43

Day 43 starts week 7 in Lift 4, which is the first "shred" week. Today's workout was Chest and Back as a circuit workout.  Even though this one did not have any HIIT component, I was sweating a lot (which I don't usually do when lifting), especially in the second block. The evening workout was the 645 cardio workout. In this one, I again selected exercises from Insanity, P90X, and Lift 4 to swap out. I was able, for the first time in a long time, to actually run when doing mountain climbers in the first two blocks. In the third block, I did have to do them slowly. So, my cardio strength and stamina are getting better.