Workout Update: 645 Cardio/Chalean Extreme Day 37

Day 37 was the rest day in CE so I did 645 cardio in the morning and then the stretching routine from Lift 4 in the evening. I can tell that my cardio fitness is getting better, as is my range of motion when doing squatting and crouching HIIT exercises. I am not back to where I was when I was in my best physical condition  (When I first did the original Insanity routine years ago), but I am improving.