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.
People with depression tend to have problems with sleep and energy level. They may have trouble falling asleep or wake up during the night. Some people with depression may also have trouble waking up in the morning and sleep too long. Depression can also make you feel sluggish and unmotivated.