The human body has evolved to function in the way that it has through environmental stimulus from the natural world. In nature, a human would need to be efficient at walking, running, and throwing in order to survive. Just because we have changed our environment through technological innovation over the past several hundred years, does not negate the thousands of years that went into forming our body into what it is today.
There are specific ratios of movement, rotations, muscular tensions, and pressures that need to be coordinated in order to have efficient gait and throwing. Almost every movement that a human does is going to be a derivative of those patterns. By optimizing the length tension relationship of muscles through these patterns, you end up with a structure that is able to float in a sea of muscles and distribute force through entire kinetic chains as opposed to compressing joints and vertebrae with the impact of every step you take.
Our gym utilizes Functional Patterns training because FP seeks to codify and quantify the specific movement sequencing needed to optimize those patterns and get ordinary people to move in a closer approximation to an elite athlete.
Once these patterns are instituted, progressive overload can be utilized to build muscle that serves a functional purpose rather than isolated muscle that makes us clunky and inefficient movers.