Do You Have Your Own Back?

By Raquel Lannes-Sherrill, MA, CSCS The “crunch,” taught for decades, has been viewed as a staple of abdominal training. Should it be? A number of experts have questioned the effectiveness and more importantly, the clinical consequences of doing crunches and sit-ups.  Research conducted  by Stuart McGill, PhD, and Shirley Sahrmann, PhD, PT, FAPTA, indicates other abdominal [...]