Sleeping position is uncomfortable or pillow is too high or too low, will lead to sleep old top, you can change the pillow or into a neck massage pillow; also consider with the gastrointestinal tract infection, stomach discomfort, sleep will repeatedly turn over or top, unconscious relief of stomach discomfort symptoms, you can take oral morpholine to increase gastrointestinal power, should not eat too much food and indigestible food before bedtime, should be light The main, try to eat vegetables, fruits and other easily digestible food before going to bed, not easy to eat high calorie, high fat content and spicy, fried food. You can also consider calcium deficiency caused by sleeping in a position that often causes the blood does not flow, it is recommended to adjust the sleeping position, you can also eat more food to nourish the blood, appropriate participation in sports to improve physical fitness, in addition to sleep old to the top no other symptoms, you can pay more attention to observation.