I liked Crossfit and enjoyed my PT sessions for several months but ultimate moved on for a number of reasons. Mainly it was tgat you share the gym with a lot of other people, including some large groups who are not very respectful of the personal space of people doing one on one training. For $80 per hour I think I should get some access to equipment and floorspace etc. Also, Crossfit doesn't use conventional gym equipment except for rowing machines - instead it uses things like broomsticks, ropes and kettle bells. There isn't much focus on stretching before or aftervteaining and I foung myself with a string of minor but annoying injuries. And they are fairly evangelical about the Paleo diet, which my dietician says is hokum. However, when I got to train in a reasonably empty gym, I quite enjoyed Crossfit, and could still return.