Guruji Vibhakar Pandya about Holi:
Holi is the symbolic demonstration of the actual Prana development in sadhaks.
Many sadhaks experience the burning of Holi of Prana Body, during meditation. And most impurities are burnt. A lady sadhak used to go into meditation while frying purie-bhajiya and was able to pickup puries from hot oil with bare hands. Guruji guided her not to do meditation while cooking. Fire cannot burn during meditation. But if she comes out, then it is risky.
Holi poojan, fire-poojan purifies the Prana body.