This is not any superstition or a blind faith. It is pure medical science mixed with spirituality.
Years back holy spirits viz rishis and munis those used to live in forests we totally depend on Mother Nature. They took everything in an easy way a it comes from Mother Nature. So that they were strong and were free from diseases. Performing prayers, jap-tap and yoga were their daily routines.
Using their power of yoga they were able to predict the present, past and future of people those who used to visit them and with the help of their knowledge about herbs they used to heal their diseases and set them free of problems.
The same theory we have adopted.
