We do a lot of squatting in CrossFit. The squat in all its different incarnations is one of the best multi-joint functional movements we can do to train the body. One might think that it is all about the legs when in fact the mid-line and shoulders play just as important of a roll in all the different types of squats. In fact most of the time we are working on strengthening the trunk muscles so the legs and arms can do work better. Learning how to hold your belly tight under load makes all the difference in your, everything.