How did this guy do it? (with link)

[OmnipresentSoul]

https://www.researchgate.net/figure/The-lashing-belt-metal-ratchet_fig3_339776750

the images are not extremly graphic, but how did he do it. how tight, how uncomfortable and how long till pass out.
he used a ratchet strap

 

[astr4]

he didn't even use bean bags?? that's wild to me. definitely unnecessarily uncomfortable, i guess how fast he passed out would depend how tight it was…