Neither isolation nor sensory deprivation can be dangerous to you in as little as 5 hours. Isolation takes several days minimum to cause actual damage unless the isolated is absolutely the most dependent person to ever exist.

Sensory isolation is the same. People regularly spend long chunks of time in sensory deprivation chambers as a sort of meditation

Chinese water torture, on the other hand, is absolutely torturous within a couple hours

There is literally no danger in being sensationally isolated for an hour. People do it as a form of meditation. Anyone telling you otherwise is trying to sell you something