Question: What is the difference in physical appearance between the physical body and the subtle physical?

Sri Chinmoy: The body is a solid, tangible form. But inside the body, with the same form as the physical body but without physical substance, is the subtle body.

From:Sri Chinmoy,The body, humanity’s fortress, Agni Press, 1974
Sourced from https://srichinmoylibrary.com/bhf