Q. Why is it better for us to use a cell phone without pushing it against our ear?

A. Water absorbs radio waves. Since about 70% of the human body is made of water, the human body also absorbs radio waves. Because the wavelengths of cell phones transmissions are relatively short, the amount of the signals to be absorbed by your body will be reduced if you keep the phone a little away from the body. Also, you do not want to block the transmission and receiving of voice signals by placing your body between the base station and cell phone.