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.
Having a good night's sleep helps our brains to recover from the day's events, so that we can function well the next day. For some people with epilepsy a lack of sleep can make seizures more likely to happen, for others having seizures at night can make them feel tired during the day.