I have this same problem. I got my punching bad in an old house where it was in a concrete wall. Now there are no concrete walls available and I tried hanging it from my shed, but every hit feels like the thing's coming down on me.
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And assuming my ceiling can take it, where would be the best place to hang it? Not in the middle, correct? The way I see it, it's got less of a lever effect if I hang it in one of the corners, am I right?