According to Osho, the saying that kundalini 'drinks blood and eats flesh' is a vivid symbol of the inner fire awakened by kundalini that reorganizes your whole system: unnecessary flesh, blood, and marrow are burned away, leaving only what is essential. This heat-driven transformation demands preparation—proper diet, balanced lifestyle, and cultivated love/softness—to supply inner rasa and prevent dryness or disturbance.
It doesn’t mean literal eating; kundalini is a strong inner heat that burns away extra stuff in you, so care for your body and heart to handle it well.