Shittly programmed circuit training that impresses people that have never worked out hard. They mistake being tried and bloody for improvement. Best description I've heard of it is "bunch of crazy white people paying to be wore out" .
On the plus side-
a) All that cardio work turns chicks really hot, it also turns the men into weak stick insects.
b) The message board and corporate end has lots of infighting which brings the lulz.
c) If you can squat more than 300, bench more than 225, and dead more than 350, you'd be stronger than atleast 90% of them.
The bad-
a) They are shitty at programming the Olympic lifts, lots of high reps, and poor technique. If you understand Olympic lifting, check out their pulls and rack position. Awful.
b) They have no real screening for coaches anymore, you basically pay corporate a certification fee, boom you can be a crossfit gym.
c) They alienate any good coaches the have- Rippetoe, Everett, Dan John, Wolff, etc.... because of the back biting.
d) Lots of heavy injuries. Check out the board- Rhabdo, chronic over-use injuries, etc... But what do you expect from folks that brag about tearing their hands open doing pull-ups:(.
