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Hi

It's from a book about abs:

Six packs are the thing to have, according to the media, the fitness
industry, and every other industry that has to do with reaching out to the
masses. And we have come to expect six packs from those industries.

Does it mean that according to the media, the fitness
industry, and every other industry that has to do with reaching out to the
masses - everyone should have six packs.

I'm just not sure what "six packs are the thing to have" is supposed to mean?
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'Six packs' = well-developed abs. They are a sort of key measure of successful bodybuilding. If 'six pack' is being extended metaphorically to other, non-fitness, industries (and this is not quite clear from your context), then the metaphor would mean something like '6-pack = clear indications of outstanding products/services'.
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Hi

So it just mean that according to the media, the fitness
industry, and every other industry that has to do with reaching out to the
masses, you have to have six packs OR you should have six packs OR it is desirable to have six packs.

A bit longer piece of text:

Six packs are the thing to have, according to the media, the fitness
industry, and every other industry that has to do with reaching out to the
masses. And we have come to expect six packs from those industries.
When we at home see someone on TV take their shirt off, and they don’t
have a six pack, it’s not uncommon for at least one person in the room to
say, “Ew.” That happens all the time, and most of the time the person
saying it doesn’t even have a six pack.
The point is that the media, the TV, movies, magazines, and everything
else that’s designed for mass consumption, is skewing our views for
what’s normal in our society.
If we listened to the media, everyone on the planet would be weak and
inferior. Why? Because most people don’t have six pack abs. Don’t
believe me? Think of how the media portrays people of power or
influence. They almost always have a six pack.
you should have six packs OR it is desirable to have six packs.
Thank you for your replies!
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