Sometimes I am asked why I do not include crunches in my FAB ABS group fitness classes. I have done considerable research on the best and safest ways to strengthen your core and this post should explain my reasons for omitting them and exactly what my class is designed to achieve. So are crunches bad for you? Crunches aren’t necessarily bad; they’re just terribly overused. Doing some crunches is fine when done on a Swiss ball that supports going through the full range of movement, letting the rectus abdominus (six pack) stretch on extension. The main job of your abs is not to look good, but to switch on at the right time to support the spine in complex daily movement or sports and protect it from injury.
