A Bound and Gagged prisoner is suspended by (usually) a rope from the ceiling This is not intended for torturing the prisoner, but in reality, this could cause undue pressure on the body, and bad blood flow. Perhaps even dislocate something -- there's a reason why BDSM models engaging in suspension art tend towards the light-weight and extremely flexible end. In fiction, the prisoner does not appear to suffer any particular physical discomfort. (If the viewer thinks too much about this, it results in Disbelief of Unwilling Suspension). Reasons for doing this include: