The methodology that drives CrossFit is entirely empirical. We believe that meaningful statements about safety, efficacy, and efficiency, the three most important and interdependent facets of any fitness program can be supported by measurable, observable, repeatable facts, i.e., data. We call this approach “evidence-based fitness”. The CrossFit methodology depends on full disclosure of methods, results, and criticisms and we’ve employed the Internet (and various intranets) to support these values. Our charter is open source, making co-developers out of participating coaches, athletes, and trainers, through spontaneous and collaborative online community. CrossFit is empirically driven, clinically tested and community developed.