I used my TriField Meter to test a few beds. I found several had high levels of Electromagnetic Field (EMF) coming from the motor to the topside of the mattress, even when not operating the bed! Several sites say that EPA says the exposure limit should be between .5 and 2.5 milligauss. This could be exposing you to high levels of EMF for long periods of time. This is not a bed review or detailed investigation because there are too many variables involved. I just wanted to know if these beds produce high levels of EMF that would go right through the mattress into your body.