shake weight

I've heard good things about it, but everyone I know who has used said they felt so stupid while/after doing it.
 
I've heard good things about it, but everyone I know who has used said they felt so stupid while/after doing it.
I'd have to think this is a pretty accurate statement.

It looks like it would be effective, but I find practically all of these "home gym" equipment items are a general waste of money compared to just getting an actual gym membership.