"Capable across a wide range of ahtletic activities"

This is a quote taken from the trial edition of the Crossfit Journal describing Olympian and Crossfit trainer Eva Twardokens. What does this really mean to you though? Think of this as establishing a base of fitness and then becoming more specific as you ready yourself for your individual event. For myself this means that now that I have established a good base of cardiovascular fitness and strength I will now become more specific toward my event (combat) by integrating things into my training that more directly address the rigors of said event. This means more interval training that requires bursts of speed and strength, with rest. More long distance hiking over uneven terrain, more max effort followed by sustained measured low output.
If you train crossfit, or another random interval style of training you will find that you never really 'succeed' in the traditional sense. This is due to the fact that your 'event' is always changing, therefore your body is never able to adapt to it and settle into a rhythm.
Take a highly skilled runner, someone who can knock out 3 miles in 15 minutes. You must assume has has a ton of endurance. So you throw him on a bicycle and he is promptly destroyed by a biker who would normally be considered to have less endurance when you compare their standings in their respective events. This is because each of these athletes is preparing for a very specific sport.
Now we break this down into a numbers game. Take your average Crossfitter of Girevik and put them up against a skilled runner. They are beaten in a foot race. You then select nine other events and watch the Crossfitter or Girevik systematically destroy the runner event after event. It is because the former is training for a wider range of events and is able to adapt more easily than the runner.
This form of training is more and more falling into favor with the elite community of firefighters, police, Soldiers and Marines, and the spec ops community. This is because they never know what their next event will be.
Now think about your day to day life. You may not be fighting insurgents or putting out fires, but surely you face events with unknown factors. Working an 18 hour day at the office, carrying a stroller down a flight of subway stairs, carrying heavy boxes, chasing your children around the park.
Which system do you think will best prepare you for that?

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