Criza oaselor copilului crunches. Exercise your abs without sit- ups or crunches with help. Learn exercises and stretches for your workout routine in this fitness video. If you' re looking for a way to strengthen. You can work out your abs using other exercises that don' t include sit- ups or crunches. Learn how to correct your form. If you still find yourself yanking on your neck, try crossing your arms over your. Check out this FITNESS SPECIAL video and learn to do perfect CRUNCH only on Mind Body Soul. The crunch is a classic abdominal exercise, but while you' re toning your abs you might be crunching your spine. Research from the University of Wisconsin– La Crosse shows that the crunch. Sit- ups elevated to new heights of fitness.