Electromagnetic fields, or EMF, are areas of energy that surround electrical devices and power lines. They are produced by the movement of electric charges and can be found in both natural and man-made sources. Common examples include radio waves, microwaves, and the fields generated by household appliances like microwaves and cell phones. EMF is typically categorized into two types: ionizing and non-ionizing. Ionizing EMF, such as that from X-rays, has enough energy to remove tightly bound electrons from atoms, potentially causing damage. Non-ionizing EMF, which includes the fields from Wi-Fi and Bluetooth devices, has lower energy levels and is generally considered safe at typical exposure levels.