1. An athletic performance control system, comprising: a display system that presents workout information to a user, wherein the workout information includes information relating to content of a user's workout routine; a user interface system that prompts the user for a first input relating to a desired workout intensity parameter for the workout routine, wherein the user interface system prompts the user during performance of athletic activity of the workout routine in response to determining that the user is having difficulty with the workout routine; an input system for receiving the first input; and a processing system programmed and adapted to: provide, under at least some circumstances, a revised or modified workout routine based, at least in part, on the first input; and determine whether the user is having difficulty with the workout routine, wherein the user interface system is further configured to: Prompt the user for a second input relating to a subjective evaluation of the workout routine upon completion of the workout routine, wherein the workout routine includes a plurality of types of athletic activity; and Provide a workout comment to the user, wherein the workout comment is determined based on a comparison of the second input and previous workout data.