Exercising core muscles safely
CBC News | Posted: December 6, 2012 5:07 PM | Last Updated: December 6, 2012
Focusing on the core muscles that support the back is all the rage at gyms, but an expert is raising a red flag.
Both traditional sit-ups and planks risk compressing the spine, says Dr. Stuart McGill, a professor of spine biomechanics at the University of Waterloo.
McGill shows a safer technique to CBC's Kim Brunhuber.