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.
You may feel fatigued and have a hard time waking up. The Mayo Clinic attributes the oversleeping to atypical depression, a disorder that causes you to gain weight, sleep more and feel strange in your own body. Stress can have a similar, short-term effect on your sleeping habits.