Jaibag (abbreviation for Dr. Rehabilitation), Paul is a physical education major and he is one of the few people in the world who has developed various rehabilitation equipment himself. By designing (idea) and developing by Jaebak Paul, the effect of rehabilitation exercise can be maximized and a product that anyone can use conveniently was born. Paul is also the first person in the world to digitize both core functions in rehabilitation exercises. Digital measurement and load regulation are just that. The two technologies developed for the first time in the world can produce medical devices or personal exercise equipment for the rehabilitation of the musculoskeletal system of the neck, waist, knee, wrist, and shoulder. Neck rehabilitation medical device and neck exercise device have already been developed and exported, both at home and abroad. He is an inventor with 4 domestic patents and 1 US patent. Thank you.