theragun prime - percussive therapy deep tissue muscle treatment massage gun theragun the theragun prime is a simplified smart percussive therapy device that prioritizes the essential features you need while maintaining the power and effectiveness of theragun's deep muscle treatment. ease discomfort, soothe tightness and tension and recover faster. the theragun is a percussive therapy device used by physical therapists, trainers, chiropractors, celebrities, athletes, and over 250 professional sports teams worldwide. developed by dr. jason wersland, every aspect of the theragun prime has been thoughtfully designed for maximum ergonomic comfort and unparalleled durability and treatment.