Sit-Ups Are Stupid & Crunches Are Crap: How to Strengthen Your Core, Get Great ABS and Conquer Back Pain Without Doing a Single One!

Viac o knihe

"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 routine (illustrated with photos) and a meal guide--teaches healthier and smarter ways to get great abs without compromising your back and neck anymore. Sit-Ups Are Stupid and Crunches Are Crap, based on the science of flexion, addresses the key issue of core imbalance and the resulting (and totally unnecessary) pain."--