This document discusses Kris Gilchrist's development as a swimmer from ages 4 to 25. It describes his early years learning to swim and competing, where he found early success but was often smaller than his teammates. As a late developer, coaches focused on his technique and potential. The document outlines Gilchrist's teenage years training under various coaches and his transition to senior swimming. It reflects on using training and competition times appropriately for different swimmer types and generating motivation for both early and late developers.