Air, water, dumbbells, smartbells,free weight, machines, altitude submersion ? use whatever you choose ?all is for naught if it is not based on sound training principlesgrounded in sports science and proven practice. It is not the trainingmethods or the exercise, it is the system. When and where does themethod fit? When is it appropriate to include? When is ita=inappropriate? How can the training effect be measured? The fact isthat sound training requires direction and purpose. The goal of asystematic is to achieve results that can be consistently repeated.