what does it mean if someone's muscles are ripped?

[Sarah]

I would think that that would be a bad thing, but people try to do it.

 

[wise]

It is only an expression. It means their body fat is so low that there is very little or no fat between the surface of the skin and the muscle. It means that the muscle is visible under the skin, for example, 6 pack abs. You can see the muscle fibers