What does that Mean
 

Have you ever had that feeling when you are sleeping and just as you wake up you feel like yo have fallen off a cliff, your stomach feels like it is on the ground and then as you awake it comes back to you.

I am not sure what you exactly mean, but I had an experience when I dreamt of falling from a building and when I was about to hit the ground I woke up and it feels so real.

I fly in my dreams sometimes..like if I fall off cliffs or buildings

Sometimes I feel like I'm falling off from bed.. but nahh..

Dreams are exact opposites of what will happen.

Hang over or muscle pain due to a strenuous late night exercise? :pimp

I've had that falling dream where you wake up and jump before and smacked my head against the wall :(

exactly the same dreams that i have, except that i fall from the stairs