You will be positioned on an x-ray machine that produces small amounts of radiation and passes x-ray beams through your tissues to record images of the inside of your body. You will not feel anything from the x-rays, so there is no pain or discomfort. It is important to remain still during your x-ray procedure to produce the clearest, most useful images. Following your x-ray, you will be able to resume all normal activities as there generally are no side effects. The densest materials, including metal and bone, will appear white in your x-ray image, while muscle and fat will appear in shades of gray, and air such as that in your lungs will appear in black. These images can be difficult for the untrained eye to understand, but your doctor will be able to use them as a roadmap toward a precise diagnosis.