As far as materialism is concerned, it may be too nervous or too tired. Also, you may sleep badly and press your hand against your heart; Or your heart rate is too slow, so it is dangerous to sleep too deep. Then you will have a chased dream that will wake you up. This is the self-protection of the body.
Idealistic treatment: You can buy a piece of jade (Hetian Jade \ A Emerald Jade \ Xiuyu Jade in Xinjiang) to wear (it must be true and not optimized). It is said that jade can ward off evil spirits and soothe the nerves.
Materialist treatment: If you often have such a dream, you are tired after waking up, and your spirit is not good. It is recommended to go to the hospital.