During this era, rope was a primary tool for restraint used by samurai and police. Hojojutsu was a highly codified system where different schools (ryu) developed distinct patterns to restrain prisoners. Crucially, the way a person was tied communicated their social status and their crime to the public. There were four distinct ties for the four distinct classes of society.
Pain, numbness, and tingling are all part of the dialogue. The Rigger’s job is to distinguish between "good pain" (deep tissue compression) and "danger pain" (nerve damage).
(intense sensation play) and provides foundational knowledge for on-stage performance skills. Note that reviewers mention it does not explicitly cover suspension. Amazon.com Educational Value & Safety