i don't really "know" cross fit from a hole in the ground but the folks I train with that do it are wicked good at interval type hard fast glycolic zone training....this stuff is the fastest thing to adapt to training wise and the quickest to go when you slack off. given the temporary nature of this type of the relatively high physical/caloric toll as compared to SM training which takes a while to build strenght of but the adaptation is less transient...I know which one I'd go with.
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