The feeling of falling from a height while sleeping is a symptom of muscle tension, which is usually associated with decreased sleep quality due to excessive physical fatigue, tension, anxiety, and stress. If the body lack of trace elements, anemia, calcium deficiency caused by muscle over-excitation, can also lead to sleep, the feeling of falling from a height symptoms. Similar symptoms may occur if you sleep on your stomach a lot at night, have poor breathing, have a heart condition, excessive fear, palpitations, and often press your hands to your chest when you sleep. If you have frequent symptoms of falling sensation in your sleep, it may also be related to brain diseases, which may be related to the sequelae of traumatic brain injury, degenerative brain diseases, cerebrovascular diseases, encephalitis, brain tumors and so on. You should go to the hospital and choose a reasonable treatment method for the cause.