I'm pretty sure, it either is impossible or VERY unlikely that a person isn't dreaming.Though, and don't quote me on this one, I'm pretty sure I've read somewhere before ( even as recently as today maybe ) that certain psychological and physical ailments can create a lack of noteworthy activity, especially regarding dreams... It's definitely normal to be unable to recall your dreams. You lose almost all of what the dream was about in just a matter of minutes after waking up.Look around the web for tips on how to remember, most sites will say to keep a notebook and pen ready, and then they will give you ideas and tricks to try.