I was tickled for over an hour nonstop about 2 weekends ago (my 'restbrakes' were the tickler changing postions ). While it was nonstop, but not as intense as I would have been interested in (I'm starting to lean tword the 'darker side' out of curiosity...) I was however incredibly dizzy after the experince - I'd feared I might have had a mini stroke! - and was very thirsty. But tickling, light or intense, with no restraints, pinning down, holding me down, etc. for whatever strange reeason, that is MORE unbearable to me and I can hardly take it at all.