Petting your cat every day has good results for the owner of many health problems. When a cat purrs during grooming, it can fight against various bacteria and increase human immunity. Also, when stroking a cat, high blood pressure decreases, and the rhythmic movement of stroking and the sound of the cat's purring relaxes the body and relaxes the muscles. At this time, stress, depression, and fatigue are relieved, and even the exacerbation of schizophrenia is weakened. Catnip can be used as a warm compress for arthritis and joint inflammation. But it is worth reminding that these positive results occur if the cat does not object and likes to be with its owner. Also, human cats cannot be used for therapeutic purposes.