Ever have that sensation like you are falling while you are asleep? Hypnagogic Myoclonic Twitch or more commonly refered to as Hypnic Jerks, while unusual are not at all uncommon experiences. According to recent Mayo Clinic studies close to 70% of all people experience these sensations while the sleep. Its generally believed the cause is as your body begins to enter a restful state the muscles begin to ease up. The Brain sometimes misinterprets this as if you were falling and then sends signals to your muscles to jerk you awake. All though researchers have concluded this is a natural part of the sleeping process, we still do not know why the body does this.