Yup I was doing CrossFit but I hurt my back trying to deadlift too much and the training i was getting was not rehab specific. Plus now I don't get free membership (I used to help out there lots) so I don't go to my local affiliate. I recently started doing scaled down CrossFit at the gym down the street with one of the mums from work but then I got a DVT so most exercise is on the back burner for me right now. But don't get me wrong, I love it, but I can't stress enough how important it is to do the following in order, mechanics, consistency, intensity! I also love love love CrossFit kids and one of these days I'll get my butt over to the States to do a kids cert. I have done a Level 1 Cert and also Mike Burgener's Oly lifting cert. And I agree, nutrition is 80% of the problem in today's society.
** Purple
As soon as you trust yourself you will know how to live. Goethe