'Do you mind if I double dip?' a friend of mine asked over shared appetizers and wine at one of our favourite restaurants. I replied as I always do: Of course not. I'm not a germaphobe, and even if I was, double dipping doesn't spread many germs, does it?

Well, actually, it does. According to this article from Prevention Magazine, double dipping deposits thousands of saliva bacteria into the dip, hundreds of which can be transferred onto the next clean chip or cracker. Yuck.

Still, a little bacteria won't hurt you if you have a normal immune system, but if you're concerned about germs, it's good to know what you're putting into your mouth.