I recently bought a cheap bench and just set it up. You get what you pay for I guess: the construction is quite flimsy. Furthermore the bench seems just a bit too high off the ground. As such when I lay back on it my feet are hovering above the ground rather than being firmly planted on it.
I was wondering if there are any health risks, or whether it will lead to bad technique if I perform bench presses while my feet are not touching the ground? I should also note that the bench itself is not stable on the "side-to-side" axis - not to the point where the whole bench will topple over, but at least to the point where it may rock side to side just a tad.
edit: If it's relevant, I am doing dumbbell bench presses, not a press with a long bar.