I had trouble getting past: "Imagine a heavy, cast-iron kettlebell. If you put it on top of a paper cup, it crushes the cup. Put it on top of a concrete block a

I had trouble getting past: "Imagine a heavy, cast-iron kettlebell. If you put it on top of a paper cup, it crushes the cup. Put it on top of a concrete block and the concrete block supports it just fine. But if you lift that kettlebell repeatedly (with good form), you will get stronger. The paper cup is fragile, the concrete block is robust, and your body is antifragile (even if it doesn’t always feel that way)." If you put (for some value of "put" - i.e. drop from 6 inches) a kettlebell on the human head, you will discover that the human body isn't all that antifragile. Honestly the word I think the author is looking for is "diversified."