By Mayo Clinic Staff. An X-ray is a quick, painless test that produces images of the structures inside your body â particularly your bones. X-ray beams pass through your body, and they are absorbed in different amounts depending on the density of the material they pass through.
Physical Causes. The most obvious reason for being tired and sleepy is lack of sleep. According to MayoClinic.com, the average adult needs between seven and eight hours of sleep every day. If you're sleeping less than that, adjusting your sleeping schedule might provide some relief.
Chronic tiredness is one of the most common reasons people go to their GPs. At any time, one in every five people feels unusually tired and one in ten has prolonged fatigue. Of course, feeling exhausted or run down could be down to the breakneck pace of our 24/7 lifestyle, which can play havoc with sleeping patterns. But, adds Professor Steve Field, a Birmingham GP: âDoctors must not exclude the possibility of serious illness.â.