An exercise apparatus and method for applying one or more lateral resistive loads to participants performing complex motions at low or high speeds to condition one's body to better and more quickly perform physical movements at high speeds. Elastic members may be used to generate resistance emanating from a ground-based or vertically-positioned apparatus. The elastic members may connect to one or more of the following body parts simultaneously: feet, thighs, waist, hands, elbows or shoulders. The apparatus may be mechanically designed to fully retract the elastic members into the apparatus to maintain resistance while participants are in close proximity to the apparatus.