Why shouldn't we sleep with our feet facing the door?

Question

I have read all the questions, still I am confused.
In which direction where should we keep our head
a) Head in south (my face look towards north)
b) Head in North (my face look towards south)
Please specify if any othe direction , in this manner only

Regards

Answer 1

All the energies are passing through door openings, whether it may be good or bad energy. So sleeping towards door opening will give some sleeping disorder.
That's why we should avoid sleeping or bed arrangement opp to any door.