I continue to hear the same claim. It appears in magazine and internet articles. It's heard in fitness forums and social media outlets. It's sometimes perpetrated by high-profile fitness pros. "Just do compound lower body movements and your hamstrings will get all the work they need to ...
August 5, 2011
Here’s a link to the T-Nation article I co-wrote with Bret Contreras titled, To Crunch or Not to Crunch. The article refutes the claims made by some that crunches damage the spinal discs, discussing the relevant evidence on the subject. It complements the review article we recently published in the NSCA Strength and Conditioning Journal, and is a little more “consumer-friendly” for those without a scientific background.