My 13 year old cat Angel suffers from very severe arthritis. BEMER has taken her from barely able to walk as she was soon stiff (it was awful) to her playful self. She jumps now, runs up stairs, rolls around, she’s the happiest she’s been in years. She hunts bugs and chases birds. It’s a miracle compared to where she was a year ago. The Bemer has been the best thing I’ve ever bought.