Workout Update: 645 Cardio/MBF Day 4

On day 4, I did 645 cardio in the morning and the core circuit workout from MBF in the evening. The core circuit was similar to Tuesday's workout but with different exercises. This time, I was able to complete 6.5 AMRAP rounds. In the 645 workout, I did harder exercises than I would have done on HIIT day in Lift 4, but not the exercises that were the hardest for me.