I could not, in a million years, do this. I would starve rather than do this. I would clean out the sewers of Delhi with my bare hands than do this. I would volunteer to bugger a herd of giraffes without the benefit of lubricant daily for a century than do this. Given the choice between doing this and a bullet to the back of the head, I'd take the lead any day.
You may guess that I am not good with heights. In fact, I could only watch 2:44 of this before I had to close it and go for a walk round. I felt physically sick. How these guys do it is a complete mystery to me.
Enjoy, if that's the right word ...
H/t to Obo and, through him, MsGoodhew, who seems to have a strange take on the word 'arousing'.