It is strange to suggest that you will sleep in sweat because you cannot die in your dream. The moment you die is the moment you let go of the world, meaning you transition to a different dimension.
Biologically, when a person lies flat, the pressure of the blood circulating in their veins puts a strain on their heart for a few seconds, preventing it from beating. To counteract this, the body flutters in order to move the heart again and break the static. This is similar to the sensation of falling off a cliff in a dream; if the individual were to actually fall to the ground, they could potentially die.
falling out of bed simultaneously. yes, i fell. *
More common in those experiencing severe stress.
Lucid dreaming is a phenomenon in which a person is aware that they are dreaming while they are dreaming.
According to Sigmund Freud, the cause of a bodily reaction, such as a sexual desire or urge, or a depressed mood, is due to a sexual desire or urge.
I am curious as to why you wake up after falling asleep. Is the purpose to gain insight into the future? Why does the movie end abruptly at that point?