Sup, Jaymar? Welcome to Dream Views.

Well, the one thing I guess that you should consider is that: nothing is set in stone, when it comes to human physiology. There are always exceptions. Sleep paralysis, in theory, should have stopped you from acting out your dream, but it's been proven (through experience, for me) that dreams don't only happen during periods where your body is completely paralyzed. Not sure if you've ever had any experience with "residual dream senses," where you experience either sight, sound, touch, taste or feeling from a dream while your other senses are fully attuned to the waking world, but that's more than enough proof for me.
I've had experiences where I'll be sitting up in bed after waking from a dream and still either seeing or hearing what was going on in my dream, while I'm obviously attuned (through the rest of my senses) to the waking world.
You can really take nothing for granted when dealing with the human mind, ya know?