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the funny thing is I prefer looking at still pictures to seeing videos of the shows, so I'm sure going to a show live would be even worse in terms of actually observing a physique.
Not to mention the fact that the shows are terribly run and looking at bodybuilders gets boring as soon as you habituate and they all start to look the same. For me this takes about 60 seconds. IF they were actually able to put on a good show (something like the musclemen of old who performed feats of strength and control, see maxalding for the later) it could be interesting for longer.
-sS