When you feel like you can’t move while sleeping, the most common thing is that you have a nightmare. The so-called nightmare refers to a dream that occurs when you are sleeping, especially if you have just fallen asleep, or if you are in a relatively light sleep, feeling that sometimes you feel like you want to shout but can’t, feeling that something is pressing on your body but you can’t move. It is because the sleep is relatively shallow and the consciousness feels clearer, but in fact, it is still in a shallow sleep state, and the nerves and muscles are also still in a sleep situation, so they cannot respond with the consciousness and it is difficult to make sounds or movements. The occurrence of nightmares may be related to the fact that some people put their hands on their chest before going to sleep and feel chest tightness or pressure in their dreams when they fall asleep, or that they think about more things before going to sleep and are prone to dreaming, as well as being overly tired before going to sleep, having indigestion and excessive tension in the cerebral cortex, all of which may induce nightmares. Nightmares can be seen in normal people and do not require special treatment. Usually, you just need to avoid excessive fatigue and mental tension, do not eat too much before going to bed, and do not put your hands on your chest before going to bed. If you have a mental illness such as anxiety or depression, you may have more frequent nightmares. In this case, you can go to a psychological clinic for psychotherapy or take sedative drugs.