Anabolic/Catabolic Adaptation... anabolic metabolism absorbs energy to rebuild muscle cells; catabolic metabolism breaks down muscle fiber releasing energy.

"The risk of over-training is mitigated by performing Body'Fit pH Fitness™ prior to and immediately following strenuous physical training making pHx an ideal warm-up and cool-down routine." 

Muscle building usually relies on the catabolic breakdown of tissue in order to increase fiber size and achieve more bulk. Accelerated total body conditioning is achieved with Body'Fit pH Fitness (short form... phx™) by using primarly anabolic adaptation. Workload never exceeds circulatory support. Building muscle tone by increasing amount of ATP produced through aerobic metabolism produces a leaner muscle.  Body'Fit pH Fitness exercise can be used to speed up catabolic adaptation and speed recovery from catabolic exercise like interval training or weight lifting.