What is the meaning of "Forbidden"-Yoga ?

Tapping into the mysteries of Yogini Nyasa

So, what is the real forbidden yoga? What does it really mean? Is it about forbidden sexual practices, something weird and crazy? No, actually, it’s not. The real forbidden yoga is about the forgotten, lost, and prohibited techniques of esoteric yoga, the techniques which you don’t learn in a yoga school, the techniques which are unknown in modern western tantra. This is what forbidden yoga is all about. Here you see an example of one of the scriptures I am working with. It is Yogini Nyasa. In Yogini Nyasa, you astral project your body into the universe, and there you sit on petals of the chakras, and then on these chakras, outside in space, you perform certain sadhanas (साधन), sadhanas mudras (मुद्रा), pranayamas (प्राणायाम), and then you navigate like Super Mario Galaxy out there in these structures, almost like mechanical structures. This is the real forbidden yoga. These are the practices you do not find anywhere except with us, in forbidden yoga.