Has it gotten appreciably easier for anyone over time? I've been doing this for months, yet my cardio still never seems to keep up with the program. Yeah, I admit I don't follow the program's 8 week guideline completely, but it's amazing how much my cardio refuses to improve.
I rarely ever jog, but whenever I do go through my jogging phases, I can easily go from not being able to jog 1 mile to jogging 5 miles within one month. I VERY rapidly notice my fitness improving with that kind of workout.
With Rushfit? I feel like my body's at the same place as it was 1 week after I started Rushfit. Not quite as badly as when I did the exercises for the first time (it was a huge accomplishment for me to be able to transfer from the navasana position directly into a Hindu pushup), but Jesus Christ, these little 15 lb. dumbbells kill me when I'm mixing both strength and conditioning together.