Workout Update: 645 Cardio/Lift 4 Hybrid: Day 49

Day 49 was the start of the final week of this round of Lift 4. So, I did the 645 cardio workout in the morning and Lift 4's chest and back workout (which is a circuit workout again this week) in the evening. Both workouts went fine. Chest and back used all the same exercises as last week, just in a different order. At the end, there is a three-exercise burnout round in which you do two sets of push-ups with back extensions between them.