How To Become A Marine – Guidelines for crunches : More Details http://tiny.cc/d0dn6w

Lie on your back, knees flexed together with your feet flat on the floor. Fold your own arms around your chest without the need of. gap between your forearms & your chest when raising your chest muscles. A helper may keep your legs or feet. below the knees in whatever manner is most comfortable. Kneeling or sitting on the feet is allowed. How To Become A Marine To successfully complete a repetition, raise your upper body from the beginning position, touching your thighs together with your elbows or forearms. Return to the beginning position together with your shoulder blades holding the floor. A rest inside the down placement can be taken at any time. The maximum requirement for passing this check in the work of the IST is 44 crunches in minutes.