Founded in 2015 as the San Diego manufacturer of the patented Core-Tex and Core-Tex Sit reactive training platforms, Reactive Training, LLC operates from a Fifth Avenue Hillcrest headquarters shipping tri-planar movement equipment to NFL teams, Olympic training centers, Premier League clubs, and Navy SEAL units worldwide. The founder also established the Hillcrest corrective-exercise studio Function First, and engineered the Core-Tex to tilt, translate, and rotate 360° simultaneously as the only commercial platform combining all three planes of motion with base translation. Core-Tex units ship to physical therapy clinics, university athletic departments, and hospital rehab floors across the US, UK, and Europe. The Fifth Avenue office handles product demos, trainer education certifications, and direct B2B sales rather than consumer personal training sessions. Rehab clients cycling off Core-Tex protocols sometimes transfer into kettlebell-based posterior-chain strengthening at Hillcrest Kettlebells to translate tri-planar stability into loaded functional movement. The most complex engagements are full facility design consults that integrate Core-Tex platforms into elite-level sports team training rooms and NCAA athletic department rehabilitation suites.