Letter Re: Fitness for Success When the SHTF
HJL & JWR,I am writing to give a brief comment on whether crunches or sit-ups, are important or relevant to the back. The spine is a series of over 50 joints. Those joints are “capsular-synovial” joints. (just like your knee, hip, and shoulder, just smaller) To say that a crunch, or sit-up is good or bad is way too generic… to the point that it is irrelevant. It is popular, often repeated, but not correct as it relates to its benefit, or detriment to the spine. Most joint pain is intra-capsular (within the joint). It is often a result of …