Workout Update: 645 Cardio/Lift 4 Day 22

 Day 22 was the start of week 4, which was the chest and triceps circuit workout in Lift 4, and the cardio 15 workout in 645. Both workouts went well, and I was able to maintain the increased amount of weight on all of the exercises from week 3. Since the Lift 4 workout did not have a HIIT component, I did a "harder" version of the cardio workout subbing in exercises from Lift 4 and P90x plyometrics.