This is a popular training program for the crunches part of the PFT.
While it is a good program to help you get to and past 100 crunches, remember that it crunches are a one-dimensional component of fitness and are not a substitute for a full core workout. OCS is much more than just the PFT.
Do three maximum effort sets. Rest 60-90 seconds between each set. As soon as you stop (even for one second), that set is complete.
I received this awesome workout from my recruiter. Many of the former candidates, current officers, I know use this, so hopefully some of you will see success with it. I know it’s a long read, but well worth it. Enjoy.
This program was used by Major Charles Lewis Armstrong, USMC to prepare himself to attempt to set a world record in number of pull-ups completed in a single exercise session. The program provides the necessities for successful physical improvement namely, VARIETY, OVERLOAD, and REGULARITY. Users have achieved remarkable results in only 6 to 8 weeks. This means that most, if not all, have been able to meet the performance level they have set out to achieve, a single set of twenty repetitions. Armstrong Pull Up ProgramIt can not be overemphasized that his program depends upon regularity. Daily performance of the exercises listed in the following paragraphs holds the true key to reaching and to maintaining the twenty repetition level.