You all know by now that crunches and sit-ups
do very little, if anything, to produce a strong core.
Dr. Stuart M. McGill, a world renowned professor of spine biomechanics at the University of Waterloo (Waterloo, ON, Canada),
and author of Low Back Disorders: Evidence-Based Prevention and Rehabilitation(2nd Edition),describes and provides evidence of how crunches are a large cause for lumbar spine disc rupture.
But, it is with experience and observations that I have decided long ago to eliminate them from my training, as well as my clients' training programs.
Here is a quick look at some of the progressions in core work using one of our most favorite functional training tools at the Matt Jennings Boot Camps training studio...
The TRX Suspension Training System.
(And, if you think you need crunches or sit-ups for the jacked-6-pack...click the video below)
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