Practitioners should have knowledge and the understanding of the various Yoga principles. There is no nudity in this yoga type.
In a simple word, Midnight yoga is the practice of yoga without dressing any cloths. Main reason for doing this is to allow you to feel free in your body.
You can do the exercises and poses without any restrictions brought about by yoga clothes. But doing yoga without any clothes is hard to grasp for most people. Yoga Practitioners should bear in their mind that doing yoga in this manner is meant to unite the body, mind and soul.
Now you can decide that doing yoga in this manner is Good or Bad ? Please comment.