A mobile physical training system and method, wherein a wheeled platform is secured to a user via a bodyworn harness and/or belt, wherein the user can easily and selectively manipulate the amount of resistant weight carried by the platform, and wherein consistent, hands-free delivery the resistant weight force is realized for both pushing and pulling actions, thereby enabling the physical training system of the present invention to target speed, strength, and endurance training for individuals of virtually any skill level during a variety of training activities, such as walking, jogging, forward, backward and lateral running, push training, mobility training, and wheelchair training.