Excuse me: which direction is my bedside?

Last time, I went to a lecture by a Malaysian Feng Shui master. He specifically talked about sleeping with head facing east and feet facing west, so it is better to sleep with head and feet facing east and feet facing west. The principle is that the magnetic induction line circle is in the direction of the South Pole and the North Pole, which will affect the blood flow, so it is not appropriate to sleep in the north-south direction. It is best to cut the direction of the magnetic induction line, that is, sleep in the east-west direction, and it is no problem to face east or west ~