Yes. Most Certainly. The magnetic field of the earth plays and important role while formulating Vaastu Shastra which can significantly influence human life. According to Vaastu Shastra, one should never keep his / her head towards the north while lying as it obstructs the circulatory system causing irregular sleep, tension, paranoia and other mental problems. The magnetic fields of the same poles repel each other while the opposite attracts each other, therefore a person should keep his / her head towards the south or east.