Sri Chinmoy: Yes, the spiritual life does change the physical form if while practising spirituality you care for the physical. There are many spiritual Masters who practise spirituality and also care for the physical. I am one of those. Even while I was in India I took regular physical exercise as well as meditating. Again, there are many Masters who don't care for the physical.
The spiritual life does have the capacity to change the physical, but if we do not consciously use the spiritual life to help the body, then naturally the body will respond only to a limited extent. It depends on the seeker — whether he wants his spiritual life to enter into his body-consciousness or whether he wants to have two separate existences. I feel that the two should go together. But again, it is useless if the body becomes strong but one is not aspiring. The body and soul have to go simultaneously on the spiritual journey.