Ty EMT11KDL for the welcome, And jwoods, I work with a growing number of folks who are using Crossfit and totally love it. Ive gone to a few classes and can see what the draw is. But like most systems that use a high intensity component, there is a real chance of injury. I think that anyone who is going into Crossfit, especially if they are not regularly exercising already, need to have a patient gradual approach. AN absolute must is the beginner classes that any reputable Crossfit Box would have for new members. And ask the instructors background, in addition to being a Crossfit certified trainer, they should have some background relevant to exercise, being a personal trainer, strength and conditioning coach, etc. And for the trainee, know and respect your body and its limits. Thanks for asking, hope this helped a little.