Wissantra is a type of Yoga for the Wissers.
What we have to remember is that Eastern Traditions are different to those of us in the West.
The typical eastern physique is small in stature and thus they are of more nimble of bodily contortions.
Here are some examples.

Notice the contours of the body.
This would be quite difficult for the European wisser .
However in Wissantra we have a Wisser here in a typical Wissantric position after a very heavy Ritual session !

Notice the difference!
Wee do not recommend this be tried without the proper degrees being attained !
Disclaimer !!!!!
This is not to be tried without a professional Wissantric Instructor !