Our mattresses can literally be a conductor of EMFs. That’s not great news, but don’t freak out. We’ll talk a little bit more about mattresses in Chapter 15, but if you already love the bed you’re in, you can simply get some EMF shielding bed lining for use on your already existing mattress. This bed wear is shown to have a shielding effectiveness of 99.7 percent. You can find more information through the bonus resources at sleepsmarterbook.com/bonus.