E-book Category: Fitness E-book Title: Escalating Density Training: The Kettlebell Way Book Description: Escalating Density Training: The Kettlebell Way Escalating Density Training (EDT) is a fairly recent development in strength and conditioning. It is not a new concept, but it has been formalized and popularized by noted trainer Charles Staley. The basic concepts of EDT training are simple; however, in this simplicity lies the power and productivity inherent in its adaptation to one's workout regime.