a scientist (james pares from UK) has proved that electric charge is produced in human body due to electromagnetic radiations from electrical appliances around e.g. mobiles, TV, computers, lights and electric wires etc. and if somebody wants to protect himself/herself from these harmful radiations then you should place your forehead on the ground more than one time a day because earth has very good tendency to absorb these charges.
Al Hamdo lillah Muslims use to please their foreheads at-least 5 times a day on the ground. and i am happy that even from the scientific research all the Islamic practices are going to be proved as beneficial for human.