Sacred Haven of Debauchery

Try it without me. So, with great difficulty, I managed to put it together.

Added 1 minute ago

Yeah, on a chair.

By the way, there's an exercise. I remember when I went to the gym, I used to do this exercise (and I wasn't the only one):
You sit down and, as if, lift yourself up on your buttocks. Some also added weight (placed pancakes on their legs).