- Jan 9, 2001
- 7,572
- 2
- 76
My friend and I have been doing Insanity for a few weeks now...good lord that cardio is brutal. "Cardio Abs" has come up a couple times now, and therein lies my question: In that "C" position, my friend and I both feel like we're feeling far more muscular effort in our lower backs than in our abs. Some of the exercises definitely give a burn to the front side too, but I'm just wondering if we're not doing it right. Is it normal to feel like your lower back is exerting a decent amount when doing exercises in that position?
