Aside from serving as the point of weight-bearing for all activities performed in standing, the foot represents the terminal link in the kinetic chain where forces generated by the athlete are transmitted to the ground beneath them. The action of the foot is integral to all modes of gait, from walking to sprinting. During sprinting, for example, the athlete's technical proficiency in how they apply force during each foot contact is recognised as paramount. Despite the integral role of the foot in locomotion and a host of athletic activities common to the majority of sports, training to develop this critical link is often overlooked in the physical preparation undertaken by athletes. This post examines the role of the different muscle groups involved in the dynamic function of the foot. We will explore different training modalities to develop the respective muscle groups, and also discuss the applications of this form of training, from both sports injury and performance perspectives.