Knowing how to properly exercise is essential in order to avoid injury, progress appropriately, and just have the best experience possible. In this lesson, we will go through the technical aspects of physical fitness. Firstly, identify the prerequisites; what you need to know and do prior to doing your first squat or push up. In this lesson, we are referring mainly to physical exercise, however, psychological exercise is equally important for progressing physically which we will be discussing in future lessons.