DIRECTION FOR SLEEP

North pole and South pole of earth has magnetic energy flow. 

North pole has positive and South pole has negative flow. Similarly human body has head as positive and feet as negative.

Also,Upper part of body is North-east and lower portion is South-west.As per science two positive poles repel each other.So head part which is positive should not be kept towards north ,which is positive as well. Same case for leg portion

So one should not sleep,keeping head towards north and leg towards south.