Applied Functional Science® (AFS) is the thread running throughout all that Gray Institute® delivers. AFS is based on science—not theory —that strategically leads to the most effective and efficient techniques for individuals. AFS influences and enhances the entire Movement Industry: performance/training and conditioning, prevention, and rehabilitation.

AFS is the convergence of the Physical (the world we live in), Biological (the miracle of the human body), and Behavioral Sciences (the power of the mind and spirit). The Physical Sciences considers and leverages the impact of Environment, Gravity, Ground Reaction Force, Mass, and Momentum. on the human body. The Biological Sciences consider and leverage the impact of Motion, Reaction, Proprioceptors, Muscles, Joints, Task, Specificity, and Mobility/ Stability on the human body. Meanwhile, the Behavioral Sciences consider and leverage the impact of Success, Encouragement, Locus of Control, Empowerment, Relevance, and Significance on the Human body. Together, these sciences form a powerful, scientifically-based, and context-specific approach to treatment that leads to better individualized outcomes.