There is no scientific basis for sleeping in a bed facing the door. It is usually based on Feng Shui.
From a Feng Shui perspective, the door is a vent for air and wind. If the bed in the bedroom is facing the door, that is, facing the wind outlet, the wind will inevitably blow all the people sleeping on the bed. If the wind is too strong, they will easily get sick.
If the door is placed on the bed in the bedroom, that is, where the air vent is located, then it will not be able to replenish the energy it deserves, which will undoubtedly affect the physical and mental health of the owner. As a result, you will not be able to complete the next day's work in a full mental state and face the upcoming struggle, which will naturally affect your career.
In terms of privacy in the bedroom, if the door is opposite to the bed, one's privacy will not be guaranteed. In this case, it will not only cause people to be emotionally nervous, make it difficult to relax, and even make people anxious. If things go on like this, it will cause varying degrees of damage to the human nervous system and secretory system.
"Eight Houses Mirror" says: If the bed is afraid of the door of the room hitting each other, if it hits the head and chest, it will be bad; if it hits the whole body, it will be bad. The bed should be placed in an auspicious position, consistent with the zodiac and numerology, and avoid an unfavorable position. It can be seen how important the ancients regarded the position of the bed in the bedroom.
When the bedroom area is limited and the bed and the door cannot be avoided, the best way to avoid it is to add a screen or baffle between the two. In this way, you can avoid the disadvantage of "the bed is afraid of being rushed by the door".