I believe Boris explains the hows and whys quite well. https://www.youtube.com/watch?v=2-8gsWZqDBM https://www.youtube.com/watch?v=2-8gsWZqDBM In complete ser

I believe Boris explains the hows and whys quite well. https://www.youtube.com/watch?v=2-8gsWZqDBM https://www.youtube.com/watch?v=2-8gsWZqDBM In complete seriousness, anyone can do this. Honest. It is something anyone can learn with even a bare minimum of practice. And despite the joking nature of the video I linked, it is quite accurate in that once you know how, it is quite a comfortable position to hold for whatever length of time you feel like.