Every good exercise program starts with a method by which training principles are based upon. In <i>Kettlebell Conditioning</i>, Coach Collins' has developed the 4-Stage BodyBell® Training System™ that allows you to learn the basic strength and swing pattern drills before more complex power-orientated movement patterns. A method of progression in any training program needs to first be established to enable one to know where they start and where one needs to progress to. The innovative 4-Stage BodyBell® progression applied here allows you time to establish appropriate strength throughout the body, its muscles, joints, energy and nervous systems and progressively adapt to new functional and more powerful swings and movement patterns over time for optimal athletic gains.