" The entire aim and endeavor of yoga is to open up the cocoon of the physical body to the larger sensory body where you experience everything as a part of you. Fasting is an extension of this logic: it is a way of nourishing yourself without any active ingestion. It may be done as a detoxification process nowadays, but this is the internal rationale. "

― Sadhguru , Inner Engineering: A Yogi's Guide to Joy