Sit-ups are stupid & crunches are crap : how to strengthen your core, get great abs, and conquer back pain
It’s time to change the way you think about, and exercise, your abs. Dr. Todd Sinett, a second-generation chiropractor and certified fitness trainer, explains why you should never do a sit-up or any version of a crunch ever again! Sinett’s innovative new book—which includes a detailed exercise routi...
East End Press