Like the usual answer, I'd first respond with "For what?".
It's a tool in a box. Like Gant said, his Couchness screwed it up like he did KBs. Both fantastic tools that don't get enough play, and in some cases, get too much.
For boxers, and at least as much, basketball players, it delivers qualities that not much else will. For everyone else that I'm not thinking of, I still see no drawback to skipping a few days/week. Unless you're a 300 lb powerlifter. Then it may not be that great.
And if you don't think kettleball squat cleans are difficult, I say, step up to the med-ball
- CJ Kim