What program is more appropriate for Army Physical Readiness Training, Cross Fit or P90X?
Lots of military folks prefer CrossFit, as suggested by the vast number of CrossFit military affiliates (http://www.crossfit.com/).
It appears that the P90 series of programs (Power 90, P90X, P90X2, P90X3, along with other programs from BeachBody) mirror the comprehensive approach to fitness, nutrition, and health described in FM 7-22 and the Army Performance Triad (http://hprc-online.org/total-force-fitness/performance-triad).
While I would not go as far as the satirists at The Duffel Blog who have jokingly suggested the Pentagon is looking to ban CrossFit (http://www.duffelblog.com/2014/04/crossfit-ban-dod/#!5RDEq), more serious journalism (http://www.outsideonline.com/fitness/strength-and-power-training/Growing-Pains-CrossFit-Injuries-On-the-Rise.html; http://www.armytimes.com/article/20100930/OFFDUTY03/9300301/The-hidden-danger-extreme-workouts) suggests that CrossFit may create more health problems than it solves. (Other studies suggest CrossFit may be good, afterall: http://www.25idl.army.mil/PT/U.S.%20Army%20CrossFit%20Study.pdf)
This is an old conversation, with plenty of Army guidance (http://phc.amedd.army.mil/PHC%20Resource%20Library/PHN_No_0312-01_Extreme_Conditioning_Programs_and_the_Army_2012.pdf) based on government-funded research (http://www.researchgate.net/publication/51788315_Consortium_for_Health_and_Military_Performance_and_American_College_of_Sports_Medicine_consensus_paper_on_extreme_conditioning_programs_in_military_personnel)
Which do you prefer? Or are there better programs out there?
In all seriousness we need something that gets the base level up first! We need to enforce the standards starting at basic where they should only graduate if they ACTUALLY pass with at least 60 in each event and do the same in AIT. Do not give us a dud. Then we can go into crossfit then crazier workouts.
I agree that CrossFit is intense (and thus can be dangerous). But intensity is the single most important factor in promoting fitness. As humans we are designed to adapt to a stimulus. If our physical training isn't stressful enough to prompt the body to adapt (i.e. get fitter, faster, stronger) then it won't be effective. Be smart, listen to your body, and seek out coaching for movements that you are unfamiliar with (just like with any other workout regimen).
One thing however that CrossFit does well that other regimens don't replicate is Community. CrossFit training is typically done in group settings or within a larger community of members. We are generally more likely to adhere to a physical training regimen (especially an intense regimen) if we have a community of supporters holding us accountable.
And finally, CrossFit incorporates ideals of holistic training. It has done a lot to educate our community on nutrition, mobility, and many other factors that effect human performance. Training in my opinion is only 15%-25% of the challenge. Sleep, diet, and hydration are collectively far more important to performance.
I started CrossFit and I love the variations in exercises. For me personally, I've cut down on running and started focusing more on strength training and building muscle by doing CrossFit exercises, which is actually great for my cardio as well.
Everyone is different and it's all about finding what works for you and not listening to the indoctrinated sheep in the military tell you what is best for your body if you know otherwise.
Pushing fad/niche workouts such as P90 or Cross Fit as a standardized workout will most certainly alienate Soldiers who want to workout but prefer something else. Again, let the young/junior NCOs do their thing.
I guess the point that I was trying to make is that, it's not a "one size fits all" kind of a workout and it does cater to a specific group.
T-25 works for me with elements of Crossfit on the weekends and spin class, it's all good for me.
P90X, Insanity, T-25, and Les Mills Combat are all good programs that can be done easily. The first time we did Les Mill's Combat, I was soaked head to toe and had a hard time walking to the shower.

CrossFit seems to think that the more pain you are in, whether on that day or the days following the workout, the better. The more you disregard the pain and keep pushing through it, the "tougher" you are. But this is not true, and more importantly, it's not healthy.
Doing p90x will definitely up your pushups and maybe even your situps but unless you are running on your own, your run will suffer.
I have even coached a few soldiers who were on the AWCP through use of insanity which eventually got them off the program.
I have tried the hybrid and it felt like I was missing something. Plus, Tony is not a human haha.
"With an increased HR to VO2 relationship it will never be as good as typical cardio exercises. It is simple physiology really. Increased heart rate decreases the time available to fill the left ventricle of the heart, which means that the left ventricle will contain and eject less blood per contraction. This means that the "stretching" of the heart wall, which is necessary to increase your stroke volume and your VO2, does not happen. It's the Frank-Starling mechanism in full effect and it's basic cardiorespiratory physiology. Moral of the story: STOP thinking you can 'get your cardio in' by lifting weights -- no matter how fast you lift them!"
http://www.ncbi.nlm.nih.gov/pubmed/23439334

Crossfit-based high-intensity power training improves maximal aerobic fitness and body...
J Strength Cond Res. 2013 Nov;27(11):3159-72. doi: 10.1519/JSC.0b013e318289e59f.

What's The Matter With CrossFit?
On May 12, CrossFit filed suit against the National Strength and Conditioning Association, claiming the NSCA's Journal of Strength and Conditioning Research published a study based on "'junk' science" to suggest that the fitness program "causes injuries at a high rate." The motive, the suit alleges, was to undermine CrossFit's lucrative and steady business of certifying trainers, for which the NSCA is a competitor.