As an integral part of the Functional Movement Systems (FMS), the Y Balance Test is a thoroughly researched, yet quick and easy way to demonstrate functional symmetry and performance as well as test a person’s risk for injury. The Y Balance Test Protocol was developed through years of research in performance improvement and injury prevention using the Star Excursion Balance Test. This device and protocol are highly accurate and can be used for measuring pre- and post-rehabilitation performance, improvement after performance-enhancement programs, dynamic balance for fitness programs, and return-to-activity readiness.